Mersenne ECM top factors

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M320387 has a factor: 541100193815140479857193401236793 (108.738 bits)
M245261 has a factor: 328454111101294019627725259352463 (108.017 bits)
M197507 has a factor: 40816529536750543810018110777377 (105.009 bits)
M183877 has a factor: 5828278642537937116765796283377 (102.201 bits)
M334021 has a factor: 2957514611860794768243809647063 (101.222 bits)
M2035447 has a factor: 366557134666724138080839849143 (98.210 bits)
M317599 has a factor: 194601235237268887164049120823 (97.296 bits)
M649787 has a factor: 17602271330379663581764779769 (93.830 bits)
M186653 has a factor: 10644699432581735799328994233 (93.104 bits)
M311807 has a factor: 2886644191558243664464890263 (91.221 bits)
M238037 has a factor: 1840163934098609425123801601 (90.572 bits)
M326657 has a factor: 1062401339409931312037792687 (89.779 bits)
M8185757 has a factor: 359472841089385113796023359 (88.216 bits)
M256579 has a factor: 216797667997308422734706119 (87.486 bits)
M325001 has a factor: 20375795055928461564937433 (84.075 bits)
M2145389 has a factor: 3723368062513511308520257 (81.623 bits)
M2887711 has a factor: 1973642563147691142324313 (80.707 bits)
M4417321 has a factor: 778466307236820424981543 (79.365 bits)
M1997693 has a factor: 29537618310414754565479 (74.645 bits)
M4395029 has a factor: 10915830527318100533977 (73.209 bits)
M4369777 has a factor: 329357855318847362239 (68.158 bits)
M2900857 has a factor: 327014270192082722911 (68.148 bits)

For copy-paste to forum:

[M]M320387[/M] has a 108.738-bit (33-digit) factor: [url=https://www.mersenne.ca/M320387]541100193815140479857193401236793[/url] (ECM,B1=250000,B2=25000000,Sigma=7930903340813464)
[M]M245261[/M] has a 108.017-bit (33-digit) factor: [url=https://www.mersenne.ca/M245261]328454111101294019627725259352463[/url] (ECM,B1=250000,B2=25000000,Sigma=4337141788341671)
[M]M197507[/M] has a 105.009-bit (32-digit) factor: [url=https://www.mersenne.ca/M197507]40816529536750543810018110777377[/url] (ECM,B1=250000,B2=25000000,Sigma=5355633196000105)
[M]M183877[/M] has a 102.201-bit (31-digit) factor: [url=https://www.mersenne.ca/M183877]5828278642537937116765796283377[/url] (ECM,B1=250000,B2=25000000,Sigma=8259737373065881)
[M]M334021[/M] has a 101.222-bit (31-digit) factor: [url=https://www.mersenne.ca/M334021]2957514611860794768243809647063[/url] (ECM,B1=250000,B2=25000000,Sigma=4292388229051033)
[M]M2035447[/M] has a 98.210-bit (30-digit) factor: [url=https://www.mersenne.ca/M2035447]366557134666724138080839849143[/url] (ECM,B1=50000,B2=5000000)
[M]M317599[/M] has a 97.296-bit (30-digit) factor: [url=https://www.mersenne.ca/M317599]194601235237268887164049120823[/url] (ECM,B1=250000,B2=25000000,Sigma=4312146920584379)
[M]M649787[/M] has a 93.830-bit (29-digit) factor: [url=https://www.mersenne.ca/M649787]17602271330379663581764779769[/url] (ECM,B1=250000,B2=34250000,Sigma=323531312184899)
[M]M186653[/M] has a 93.104-bit (29-digit) factor: [url=https://www.mersenne.ca/M186653]10644699432581735799328994233[/url] (ECM,B1=250000,B2=25000000,Sigma=5485009363373251)
[M]M311807[/M] has a 91.221-bit (28-digit) factor: [url=https://www.mersenne.ca/M311807]2886644191558243664464890263[/url] (ECM,B1=250000,B2=25000000,Sigma=586615642916934)
[M]M238037[/M] has a 90.572-bit (28-digit) factor: [url=https://www.mersenne.ca/M238037]1840163934098609425123801601[/url] (ECM,B1=250000,B2=25000000,Sigma=4522831781116519)
[M]M326657[/M] has a 89.779-bit (28-digit) factor: [url=https://www.mersenne.ca/M326657]1062401339409931312037792687[/url] (ECM,B1=250000,B2=25000000,Sigma=7888203748968171)
[M]M8185757[/M] has a 88.216-bit (27-digit) factor: [url=https://www.mersenne.ca/M8185757]359472841089385113796023359[/url] (ECM,B1=50000,B2=5000000)
[M]M256579[/M] has a 87.486-bit (27-digit) factor: [url=https://www.mersenne.ca/M256579]216797667997308422734706119[/url] (ECM,B1=250000,B2=25000000,Sigma=4325952875789418)
[M]M325001[/M] has a 84.075-bit (26-digit) factor: [url=https://www.mersenne.ca/M325001]20375795055928461564937433[/url] (ECM,B1=463328,B2=46332800,Sigma=4900758528313425)
[M]M2145389[/M] has a 81.623-bit (25-digit) factor: [url=https://www.mersenne.ca/M2145389]3723368062513511308520257[/url] (ECM,B1=50000,B2=5000000)
[M]M2887711[/M] has a 80.707-bit (25-digit) factor: [url=https://www.mersenne.ca/M2887711]1973642563147691142324313[/url] (ECM,B1=50000,B2=5000000)
[M]M4417321[/M] has a 79.365-bit (24-digit) factor: [url=https://www.mersenne.ca/M4417321]778466307236820424981543[/url] (ECM,B1=50000,B2=5000000)
[M]M1997693[/M] has a 74.645-bit (23-digit) factor: [url=https://www.mersenne.ca/M1997693]29537618310414754565479[/url] (ECM,B1=50000,B2=5000000)
[M]M4395029[/M] has a 73.209-bit (23-digit) factor: [url=https://www.mersenne.ca/M4395029]10915830527318100533977[/url] (ECM,B1=50000,B2=5000000)
[M]M4369777[/M] has a 68.158-bit (21-digit) factor: [url=https://www.mersenne.ca/M4369777]329357855318847362239[/url] (ECM,B1=50000,B2=5000000)
[M]M2900857[/M] has a 68.148-bit (21-digit) factor: [url=https://www.mersenne.ca/M2900857]327014270192082722911[/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 Corey	nfs	ecm	p-1	p+1	any
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Top ECM factors of Mersenne numbers

Top ECM factors of all time for Corey

#	User	Exponent	Factor	Digits	Bits ↓ *	Date
1	Corey	320387	541100193815140479857193401236793	33	108.738	2023-03-02
2	Corey	245261	328454111101294019627725259352463	33	108.017	2022-02-20
3	Corey	197507	40816529536750543810018110777377	32	105.009	2022-06-09
4	Corey	183877	5828278642537937116765796283377	31	102.201	2022-02-02
5	Corey	334021	2957514611860794768243809647063	31	101.222	2023-09-23
6	Corey	2035447	366557134666724138080839849143	30	98.210	2020-01-07
7	Corey	317599	194601235237268887164049120823	30	97.296	2023-05-05
8	Corey	649787	17602271330379663581764779769	29	93.830	2023-03-10
9	Corey	186653	10644699432581735799328994233	29	93.104	2022-12-16
10	Corey	311807	2886644191558243664464890263	28	91.221	2022-10-29
11	Corey	238037	1840163934098609425123801601	28	90.572	2022-08-15
12	Corey	326657	1062401339409931312037792687	28	89.779	2023-07-03
13	Corey	8185757	359472841089385113796023359	27	88.216	2019-10-30
14	Corey	256579	216797667997308422734706119	27	87.486	2022-05-14
15	Corey	325001	20375795055928461564937433	26	84.075	2023-11-14
16	Corey	2145389	3723368062513511308520257	25	81.623	2020-02-08
17	Corey	2887711	1973642563147691142324313	25	80.707	2019-06-21
18	Corey	4417321	778466307236820424981543	24	79.365	2019-08-31
19	Corey	1997693	29537618310414754565479	23	74.645	2019-12-18
20	Corey	4395029	10915830527318100533977	23	73.209	2019-07-28
21	Corey	4369777	329357855318847362239	21	68.158	2019-07-07
22	Corey	2900857	327014270192082722911	21	68.148	2019-07-03