Mersenne ECM top factors

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M2081861 has a factor: 29523275062262608411429632439 (94.576 bits)
M2137493 has a factor: 4903882904601539655705338431 (91.986 bits)
M823601 has a factor: 3780732772105282737444157649 (91.611 bits)
M2131373 has a factor: 125739420907411894461630929 (86.701 bits)
M2455979 has a factor: 6857519325010032085528463 (82.504 bits)
M2467961 has a factor: 3285384425112569425787759 (81.442 bits)
M2627701 has a factor: 2798297685354445874994601 (81.211 bits)
M2455337 has a factor: 317545602681734006694857 (78.071 bits)
M2113667 has a factor: 210941391699841391167487 (77.481 bits)
M2191811 has a factor: 193175849044280903202823 (77.354 bits)
M2040191 has a factor: 102911966437266294207769 (76.446 bits)
M2550139 has a factor: 97555096856007708896233 (76.369 bits)
M2565257 has a factor: 97247465258036584031399 (76.364 bits)
M2345657 has a factor: 71654984400889201142783 (75.923 bits)
M2530267 has a factor: 70165017189171406993753 (75.893 bits)
M2566171 has a factor: 45468118586858753831407 (75.267 bits)
M2022893 has a factor: 44505148507721617223159 (75.236 bits)
M2106631 has a factor: 41758746510437380976351 (75.144 bits)
M2109959 has a factor: 37255399096314634230263 (74.980 bits)
M2077969 has a factor: 33342179630831126721359 (74.820 bits)
M1941293 has a factor: 23736739793493551470103 (74.330 bits)
M2472703 has a factor: 23537931542223290924609 (74.317 bits)
M2358779 has a factor: 14362896626040413982607 (73.605 bits)
M2569513 has a factor: 12215538638592670332169 (73.371 bits)
M2012819 has a factor: 10291922658010050976559 (73.124 bits)
M2559727 has a factor: 6484717879891269262129 (72.458 bits)
M2044909 has a factor: 4907442744931431303799 (72.055 bits)
M1981669 has a factor: 3282747235195295383567 (71.475 bits)
M2570459 has a factor: 3043753378360366073119 (71.366 bits)
M2449877 has a factor: 3031086077764255525127 (71.360 bits)
M2385121 has a factor: 2810434749241313865023 (71.251 bits)
M2561981 has a factor: 2427590870899238899369 (71.040 bits)
M1984183 has a factor: 2066195750027354602529 (70.807 bits)
M2392571 has a factor: 1395268819057691277839 (70.241 bits)
M2094779 has a factor: 1242360029026760853809 (70.074 bits)
M2023093 has a factor: 1114908292065081470743 (69.917 bits)
M2567197 has a factor: 1077880744427219104319 (69.869 bits)
M2445979 has a factor: 916433522948293730071 (69.635 bits)
M2819449 has a factor: 792975582901543502807 (69.426 bits)
M2062391 has a factor: 625429335812427610337 (69.083 bits)
M2553233 has a factor: 420842376313398261881 (68.512 bits)
M2393263 has a factor: 419202676952144754583 (68.506 bits)
M2119919 has a factor: 375143201532107207431 (68.346 bits)
M2376293 has a factor: 327374672826697461697 (68.150 bits)
M2532853 has a factor: 197322592464877214207 (67.419 bits)
M2627291 has a factor: 188560915422777827921 (67.354 bits)
M2376809 has a factor: 151114997959775838281 (67.034 bits)
M2016919 has a factor: 110903443105958460239 (66.588 bits)
M2185649 has a factor: 105104636675117519441 (66.510 bits)
M2433953 has a factor: 89755256548744686743 (66.283 bits)
M2310083 has a factor: 71215209072365993249 (65.949 bits)
M2492443 has a factor: 60934618251478393073 (65.724 bits)
M2606939 has a factor: 59958972393312714023 (65.701 bits)
M2525123 has a factor: 56708403673767807007 (65.620 bits)
M2051191 has a factor: 40540211565194066711 (65.136 bits)
M2011913 has a factor: 39722510605304437649 (65.107 bits)

For copy-paste to forum:

[M]M2081861[/M] has a 94.576-bit (29-digit) factor: [url=https://www.mersenne.ca/M2081861]29523275062262608411429632439[/url] (ECM,B1=50000,B2=5000000)
[M]M2137493[/M] has a 91.986-bit (28-digit) factor: [url=https://www.mersenne.ca/M2137493]4903882904601539655705338431[/url] (ECM,B1=50000,B2=5000000)
[M]M823601[/M] has a 91.611-bit (28-digit) factor: [url=https://www.mersenne.ca/M823601]3780732772105282737444157649[/url] (ECM,B1=50000,B2=5000000)
[M]M2131373[/M] has a 86.701-bit (27-digit) factor: [url=https://www.mersenne.ca/M2131373]125739420907411894461630929[/url] (ECM,B1=50000,B2=5000000)
[M]M2455979[/M] has a 82.504-bit (25-digit) factor: [url=https://www.mersenne.ca/M2455979]6857519325010032085528463[/url] (ECM,B1=50000,B2=5000000)
[M]M2467961[/M] has a 81.442-bit (25-digit) factor: [url=https://www.mersenne.ca/M2467961]3285384425112569425787759[/url] (ECM,B1=50000,B2=5000000)
[M]M2627701[/M] has a 81.211-bit (25-digit) factor: [url=https://www.mersenne.ca/M2627701]2798297685354445874994601[/url] (ECM,B1=50000,B2=5000000)
[M]M2455337[/M] has a 78.071-bit (24-digit) factor: [url=https://www.mersenne.ca/M2455337]317545602681734006694857[/url] (ECM,B1=50000,B2=5000000)
[M]M2113667[/M] has a 77.481-bit (24-digit) factor: [url=https://www.mersenne.ca/M2113667]210941391699841391167487[/url] (ECM,B1=50000,B2=5000000)
[M]M2191811[/M] has a 77.354-bit (24-digit) factor: [url=https://www.mersenne.ca/M2191811]193175849044280903202823[/url] (ECM,B1=50000,B2=5000000)
[M]M2040191[/M] has a 76.446-bit (24-digit) factor: [url=https://www.mersenne.ca/M2040191]102911966437266294207769[/url] (ECM,B1=50000,B2=5000000)
[M]M2550139[/M] has a 76.369-bit (23-digit) factor: [url=https://www.mersenne.ca/M2550139]97555096856007708896233[/url] (ECM,B1=50000,B2=5000000)
[M]M2565257[/M] has a 76.364-bit (23-digit) factor: [url=https://www.mersenne.ca/M2565257]97247465258036584031399[/url] (ECM,B1=50000,B2=5000000)
[M]M2345657[/M] has a 75.923-bit (23-digit) factor: [url=https://www.mersenne.ca/M2345657]71654984400889201142783[/url] (ECM,B1=50000,B2=5000000)
[M]M2530267[/M] has a 75.893-bit (23-digit) factor: [url=https://www.mersenne.ca/M2530267]70165017189171406993753[/url] (ECM,B1=50000,B2=5000000)
[M]M2566171[/M] has a 75.267-bit (23-digit) factor: [url=https://www.mersenne.ca/M2566171]45468118586858753831407[/url] (ECM,B1=50000,B2=5000000)
[M]M2022893[/M] has a 75.236-bit (23-digit) factor: [url=https://www.mersenne.ca/M2022893]44505148507721617223159[/url] (ECM,B1=50000,B2=5000000)
[M]M2106631[/M] has a 75.144-bit (23-digit) factor: [url=https://www.mersenne.ca/M2106631]41758746510437380976351[/url] (ECM,B1=50000,B2=5000000)
[M]M2109959[/M] has a 74.980-bit (23-digit) factor: [url=https://www.mersenne.ca/M2109959]37255399096314634230263[/url] (ECM,B1=50000,B2=5000000)
[M]M2077969[/M] has a 74.820-bit (23-digit) factor: [url=https://www.mersenne.ca/M2077969]33342179630831126721359[/url] (ECM,B1=50000,B2=5000000)
[M]M1941293[/M] has a 74.330-bit (23-digit) factor: [url=https://www.mersenne.ca/M1941293]23736739793493551470103[/url] (ECM,B1=50000,B2=5000000)
[M]M2472703[/M] has a 74.317-bit (23-digit) factor: [url=https://www.mersenne.ca/M2472703]23537931542223290924609[/url] (ECM,B1=50000,B2=5000000)
[M]M2358779[/M] has a 73.605-bit (23-digit) factor: [url=https://www.mersenne.ca/M2358779]14362896626040413982607[/url] (ECM,B1=50000,B2=5000000)
[M]M2569513[/M] has a 73.371-bit (23-digit) factor: [url=https://www.mersenne.ca/M2569513]12215538638592670332169[/url] (ECM,B1=50000,B2=5000000)
[M]M2012819[/M] has a 73.124-bit (23-digit) factor: [url=https://www.mersenne.ca/M2012819]10291922658010050976559[/url] (ECM,B1=50000,B2=5000000)
[M]M2559727[/M] has a 72.458-bit (22-digit) factor: [url=https://www.mersenne.ca/M2559727]6484717879891269262129[/url] (ECM,B1=50000,B2=5000000)
[M]M2044909[/M] has a 72.055-bit (22-digit) factor: [url=https://www.mersenne.ca/M2044909]4907442744931431303799[/url] (ECM,B1=50000,B2=5000000)
[M]M1981669[/M] has a 71.475-bit (22-digit) factor: [url=https://www.mersenne.ca/M1981669]3282747235195295383567[/url] (ECM,B1=50000,B2=5000000)
[M]M2570459[/M] has a 71.366-bit (22-digit) factor: [url=https://www.mersenne.ca/M2570459]3043753378360366073119[/url] (ECM,B1=50000,B2=5000000)
[M]M2449877[/M] has a 71.360-bit (22-digit) factor: [url=https://www.mersenne.ca/M2449877]3031086077764255525127[/url] (ECM,B1=50000,B2=5000000)
[M]M2385121[/M] has a 71.251-bit (22-digit) factor: [url=https://www.mersenne.ca/M2385121]2810434749241313865023[/url] (ECM,B1=50000,B2=5000000)
[M]M2561981[/M] has a 71.040-bit (22-digit) factor: [url=https://www.mersenne.ca/M2561981]2427590870899238899369[/url] (ECM,B1=50000,B2=5000000)
[M]M1984183[/M] has a 70.807-bit (22-digit) factor: [url=https://www.mersenne.ca/M1984183]2066195750027354602529[/url] (ECM,B1=50000,B2=5000000)
[M]M2392571[/M] has a 70.241-bit (22-digit) factor: [url=https://www.mersenne.ca/M2392571]1395268819057691277839[/url] (ECM,B1=50000,B2=5000000)
[M]M2094779[/M] has a 70.074-bit (22-digit) factor: [url=https://www.mersenne.ca/M2094779]1242360029026760853809[/url] (ECM,B1=50000,B2=5000000)
[M]M2023093[/M] has a 69.917-bit (22-digit) factor: [url=https://www.mersenne.ca/M2023093]1114908292065081470743[/url] (ECM,B1=50000,B2=5000000)
[M]M2567197[/M] has a 69.869-bit (22-digit) factor: [url=https://www.mersenne.ca/M2567197]1077880744427219104319[/url] (ECM,B1=50000,B2=5000000)
[M]M2445979[/M] has a 69.635-bit (21-digit) factor: [url=https://www.mersenne.ca/M2445979]916433522948293730071[/url] (ECM,B1=50000,B2=5000000)
[M]M2819449[/M] has a 69.426-bit (21-digit) factor: [url=https://www.mersenne.ca/M2819449]792975582901543502807[/url] (ECM,B1=50000,B2=5000000)
[M]M2062391[/M] has a 69.083-bit (21-digit) factor: [url=https://www.mersenne.ca/M2062391]625429335812427610337[/url] (ECM,B1=50000,B2=5000000)
[M]M2553233[/M] has a 68.512-bit (21-digit) factor: [url=https://www.mersenne.ca/M2553233]420842376313398261881[/url] (ECM,B1=50000,B2=5000000)
[M]M2393263[/M] has a 68.506-bit (21-digit) factor: [url=https://www.mersenne.ca/M2393263]419202676952144754583[/url] (ECM,B1=50000,B2=5000000)
[M]M2119919[/M] has a 68.346-bit (21-digit) factor: [url=https://www.mersenne.ca/M2119919]375143201532107207431[/url] (ECM,B1=50000,B2=5000000)
[M]M2376293[/M] has a 68.150-bit (21-digit) factor: [url=https://www.mersenne.ca/M2376293]327374672826697461697[/url] (ECM,B1=50000,B2=5000000)
[M]M2532853[/M] has a 67.419-bit (21-digit) factor: [url=https://www.mersenne.ca/M2532853]197322592464877214207[/url] (ECM,B1=50000,B2=5000000)
[M]M2627291[/M] has a 67.354-bit (21-digit) factor: [url=https://www.mersenne.ca/M2627291]188560915422777827921[/url] (ECM,B1=50000,B2=5000000)
[M]M2376809[/M] has a 67.034-bit (21-digit) factor: [url=https://www.mersenne.ca/M2376809]151114997959775838281[/url] (ECM,B1=50000,B2=5000000)
[M]M2016919[/M] has a 66.588-bit (21-digit) factor: [url=https://www.mersenne.ca/M2016919]110903443105958460239[/url] (ECM,B1=50000,B2=5000000)
[M]M2185649[/M] has a 66.510-bit (21-digit) factor: [url=https://www.mersenne.ca/M2185649]105104636675117519441[/url] (ECM,B1=50000,B2=5000000)
[M]M2433953[/M] has a 66.283-bit (20-digit) factor: [url=https://www.mersenne.ca/M2433953]89755256548744686743[/url] (ECM,B1=50000,B2=5000000)
[M]M2310083[/M] has a 65.949-bit (20-digit) factor: [url=https://www.mersenne.ca/M2310083]71215209072365993249[/url] (ECM,B1=50000,B2=5000000)
[M]M2492443[/M] has a 65.724-bit (20-digit) factor: [url=https://www.mersenne.ca/M2492443]60934618251478393073[/url] (ECM,B1=50000,B2=5000000)
[M]M2606939[/M] has a 65.701-bit (20-digit) factor: [url=https://www.mersenne.ca/M2606939]59958972393312714023[/url] (ECM,B1=50000,B2=5000000)
[M]M2525123[/M] has a 65.620-bit (20-digit) factor: [url=https://www.mersenne.ca/M2525123]56708403673767807007[/url] (ECM,B1=50000,B2=5000000)
[M]M2051191[/M] has a 65.136-bit (20-digit) factor: [url=https://www.mersenne.ca/M2051191]40540211565194066711[/url] (ECM,B1=50000,B2=5000000)
[M]M2011913[/M] has a 65.107-bit (20-digit) factor: [url=https://www.mersenne.ca/M2011913]39722510605304437649[/url] (ECM,B1=50000,B2=5000000)

0M	<	10¹⁰	All tracked exponents
0M	<	2³²	GPU TF range
0M	<	1000M	PrimeNet range
0M	<	193M	low-PrimeNet, low-res
0M	<	385M	low-PrimeNet, high-res
50M	<	146M	PrimeNet wavefront

Biggest factors for guru	nfs	ecm	p-1	p+1	any
Biggest factors (all users)	nfs	ecm	p-1	p+1	any
Recent factors (all users)	nfs	ecm	p-1	p+1	any
Search by user	nfs	ecm	p-1	p+1	any

Top ECM factors of Mersenne numbers

Top ECM factors of all time for guru

#	User	Exponent	Factor	Digits	Bits ↓ *	Date
1	guru	2081861	29523275062262608411429632439	29	94.576	2015-12-18
2	guru	2137493	4903882904601539655705338431	28	91.986	2015-08-02
3	guru	823601	3780732772105282737444157649	28	91.611	2015-12-19
4	guru	2131373	125739420907411894461630929	27	86.701	2015-08-11
5	guru	2455979	6857519325010032085528463	25	82.504	2015-07-10
6	guru	2467961	3285384425112569425787759	25	81.442	2015-07-13
7	guru	2627701	2798297685354445874994601	25	81.211	2015-12-14
8	guru	2455337	317545602681734006694857	24	78.071	2015-07-10
9	guru	2113667	210941391699841391167487	24	77.481	2015-08-04
10	guru	2191811	193175849044280903202823	24	77.354	2015-12-15
11	guru	2040191	102911966437266294207769	24	76.446	2015-07-08
12	guru	2550139	97555096856007708896233	23	76.369	2015-08-09
13	guru	2565257	97247465258036584031399	23	76.364	2015-08-13
14	guru	2345657	71654984400889201142783	23	75.923	2015-07-26
15	guru	2530267	70165017189171406993753	23	75.893	2015-08-03
16	guru	2566171	45468118586858753831407	23	75.267	2015-08-13
17	guru	2022893	44505148507721617223159	23	75.236	2015-07-03
18	guru	2106631	41758746510437380976351	23	75.144	2015-08-02
19	guru	2109959	37255399096314634230263	23	74.980	2015-08-03
20	guru	2077969	33342179630831126721359	23	74.820	2015-07-23
21	guru	1941293	23736739793493551470103	23	74.330	2015-06-09
22	guru	2472703	23537931542223290924609	23	74.317	2015-07-16
23	guru	2358779	14362896626040413982607	23	73.605	2015-06-13
24	guru	2569513	12215538638592670332169	23	73.371	2015-12-17
25	guru	2012819	10291922658010050976559	23	73.124	2015-06-29
26	guru	2559727	6484717879891269262129	22	72.458	2015-08-12
27	guru	2044909	4907442744931431303799	22	72.055	2015-07-09
28	guru	1981669	3282747235195295383567	22	71.475	2015-06-21
29	guru	2570459	3043753378360366073119	22	71.366	2015-12-18
30	guru	2449877	3031086077764255525127	22	71.360	2015-07-08
31	guru	2385121	2810434749241313865023	22	71.251	2015-06-25
32	guru	2561981	2427590870899238899369	22	71.040	2015-08-12
33	guru	1984183	2066195750027354602529	22	70.807	2015-06-23
34	guru	2392571	1395268819057691277839	22	70.241	2015-06-26
35	guru	2094779	1242360029026760853809	22	70.074	2015-07-29
36	guru	2023093	1114908292065081470743	22	69.917	2015-07-03
37	guru	2567197	1077880744427219104319	22	69.869	2015-08-14
38	guru	2445979	916433522948293730071	21	69.635	2015-07-07
39	guru	2819449	792975582901543502807	21	69.426	2015-06-17
40	guru	2062391	625429335812427610337	21	69.083	2015-07-16
41	guru	2553233	420842376313398261881	21	68.512	2015-08-10
42	guru	2393263	419202676952144754583	21	68.506	2015-08-10
43	guru	2119919	375143201532107207431	21	68.346	2015-08-06
44	guru	2376293	327374672826697461697	21	68.150	2015-06-21
45	guru	2532853	197322592464877214207	21	67.419	2015-08-03
46	guru	2627291	188560915422777827921	21	67.354	2015-12-13
47	guru	2376809	151114997959775838281	21	67.034	2015-06-21
48	guru	2016919	110903443105958460239	21	66.588	2015-07-01
49	guru	2185649	105104636675117519441	21	66.510	2015-12-09
50	guru	2433953	89755256548744686743	20	66.283	2015-07-04
51	guru	2310083	71215209072365993249	20	65.949	2015-06-15
52	guru	2492443	60934618251478393073	20	65.724	2015-07-14
53	guru	2606939	59958972393312714023	20	65.701	2015-12-14
54	guru	2525123	56708403673767807007	20	65.620	2015-08-01
55	guru	2051191	40540211565194066711	20	65.136	2015-07-27
56	guru	2011913	39722510605304437649	20	65.107	2015-06-29