Mersenne ECM top factors

M2161 has a factor: 56486824832476092597936178673369952799696200730531645364799743 (205.136 bits)
M1217 has a factor: 6116773272167843384976777858063213917010557325918356879 (181.997 bits)
M2309 has a factor: 3487911391991009430793086999731360111230111752236857 (171.221 bits)
M1373 has a factor: 142203959478768454375479374259330640346359070988407 (166.604 bits)
M2161 has a factor: 30553899007233789447243614436947582588570307358207 (164.386 bits)
M1543 has a factor: 18333134391270351479674844445819664111063485906599 (163.649 bits)
M1721 has a factor: 13017424887805605413748227640619647231549577734497 (163.155 bits)
M1873 has a factor: 5229402747045184140993760927367968819643416915009 (161.839 bits)
M2339 has a factor: 2384664180658980612438298393848609901964955383633 (160.706 bits)
M2087 has a factor: 1144261721186669289407300288576366847993924905671 (159.647 bits)
M2381 has a factor: 901939223649310421767556825677135846954351070231 (159.304 bits)
M1601 has a factor: 651721340802484774748465566059561124091876550241 (158.835 bits)
M2437 has a factor: 133810621934125887061607452990848675108065214529 (156.551 bits)
M2243 has a factor: 25505344904088339250306780569062170259580500303 (154.159 bits)
M1481 has a factor: 8348981870260729786758008817506660899281935231 (152.548 bits)
M1601 has a factor: 6629233811254755661010566946657617349801918449 (152.216 bits)
M1301 has a factor: 3172016620920990460580749619964431858642380903 (151.152 bits)
M1787 has a factor: 414060352832351408864592081627544699350748937 (148.215 bits)
M2339 has a factor: 312432273312026527069581365765802214010978497 (147.808 bits)
M2221 has a factor: 109418482145790364835045802461263406980904623 (146.295 bits)
M218279 has a factor: 39517444792635230199300256633 (94.997 bits)
M210901 has a factor: 9003574313410750768450964497 (92.863 bits)
M245783 has a factor: 970459431784756278114357353 (89.649 bits)
M230539 has a factor: 782236018788964052034356959 (89.338 bits)
M241469 has a factor: 369307517487848753824169207 (88.255 bits)
M227561 has a factor: 720447918869540332680017 (79.253 bits)

For copy-paste to forum:

[M]M2161[/M] has a 205.136-bit (62-digit) factor: [url=https://www.mersenne.ca/M2161]56486824832476092597936178673369952799696200730531645364799743[/url] (ECM)
[M]M1217[/M] has a 181.997-bit (55-digit) factor: [url=https://www.mersenne.ca/M1217]6116773272167843384976777858063213917010557325918356879[/url] (ECM)
[M]M2309[/M] has a 171.221-bit (52-digit) factor: [url=https://www.mersenne.ca/M2309]3487911391991009430793086999731360111230111752236857[/url] (ECM)
[M]M1373[/M] has a 166.604-bit (51-digit) factor: [url=https://www.mersenne.ca/M1373]142203959478768454375479374259330640346359070988407[/url] (ECM)
[M]M2161[/M] has a 164.386-bit (50-digit) factor: [url=https://www.mersenne.ca/M2161]30553899007233789447243614436947582588570307358207[/url] (ECM)
[M]M1543[/M] has a 163.649-bit (50-digit) factor: [url=https://www.mersenne.ca/M1543]18333134391270351479674844445819664111063485906599[/url] (ECM)
[M]M1721[/M] has a 163.155-bit (50-digit) factor: [url=https://www.mersenne.ca/M1721]13017424887805605413748227640619647231549577734497[/url] (ECM)
[M]M1873[/M] has a 161.839-bit (49-digit) factor: [url=https://www.mersenne.ca/M1873]5229402747045184140993760927367968819643416915009[/url] (ECM)
[M]M2339[/M] has a 160.706-bit (49-digit) factor: [url=https://www.mersenne.ca/M2339]2384664180658980612438298393848609901964955383633[/url] (ECM)
[M]M2087[/M] has a 159.647-bit (49-digit) factor: [url=https://www.mersenne.ca/M2087]1144261721186669289407300288576366847993924905671[/url] (ECM)
[M]M2381[/M] has a 159.304-bit (48-digit) factor: [url=https://www.mersenne.ca/M2381]901939223649310421767556825677135846954351070231[/url] (ECM)
[M]M1601[/M] has a 158.835-bit (48-digit) factor: [url=https://www.mersenne.ca/M1601]651721340802484774748465566059561124091876550241[/url] (ECM)
[M]M2437[/M] has a 156.551-bit (48-digit) factor: [url=https://www.mersenne.ca/M2437]133810621934125887061607452990848675108065214529[/url] (ECM)
[M]M2243[/M] has a 154.159-bit (47-digit) factor: [url=https://www.mersenne.ca/M2243]25505344904088339250306780569062170259580500303[/url] (ECM)
[M]M1481[/M] has a 152.548-bit (46-digit) factor: [url=https://www.mersenne.ca/M1481]8348981870260729786758008817506660899281935231[/url] (ECM)
[M]M1601[/M] has a 152.216-bit (46-digit) factor: [url=https://www.mersenne.ca/M1601]6629233811254755661010566946657617349801918449[/url] (ECM)
[M]M1301[/M] has a 151.152-bit (46-digit) factor: [url=https://www.mersenne.ca/M1301]3172016620920990460580749619964431858642380903[/url] (ECM)
[M]M1787[/M] has a 148.215-bit (45-digit) factor: [url=https://www.mersenne.ca/M1787]414060352832351408864592081627544699350748937[/url] (ECM)
[M]M2339[/M] has a 147.808-bit (45-digit) factor: [url=https://www.mersenne.ca/M2339]312432273312026527069581365765802214010978497[/url] (ECM)
[M]M2221[/M] has a 146.295-bit (45-digit) factor: [url=https://www.mersenne.ca/M2221]109418482145790364835045802461263406980904623[/url] (ECM)
[M]M218279[/M] has a 94.997-bit (29-digit) factor: [url=https://www.mersenne.ca/M218279]39517444792635230199300256633[/url] (ECM)
[M]M210901[/M] has a 92.863-bit (28-digit) factor: [url=https://www.mersenne.ca/M210901]9003574313410750768450964497[/url] (ECM)
[M]M245783[/M] has a 89.649-bit (27-digit) factor: [url=https://www.mersenne.ca/M245783]970459431784756278114357353[/url] (ECM)
[M]M230539[/M] has a 89.338-bit (27-digit) factor: [url=https://www.mersenne.ca/M230539]782236018788964052034356959[/url] (ECM)
[M]M241469[/M] has a 88.255-bit (27-digit) factor: [url=https://www.mersenne.ca/M241469]369307517487848753824169207[/url] (ECM)
[M]M227561[/M] has a 79.253-bit (24-digit) factor: [url=https://www.mersenne.ca/M227561]720447918869540332680017[/url] (ECM)

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	<	123M	PrimeNet wavefront

Biggest factors for Michael Kenn	ecm	pm1	any
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Top ECM factors of Mersenne numbers

Top ECM factors of all time for Michael Kenn

#	User	Exponent	Factor	Digits	Bits ↓ *	Date
1	Michael Kenn	2161	56486824832476092597936178673369952799696200730531645364799743	62	205.136	2012-04-12 08:13:00
2	Michael Kenn	1217	6116773272167843384976777858063213917010557325918356879	55	181.997	2011-10-25 19:11:00
3	Michael Kenn	2309	3487911391991009430793086999731360111230111752236857	52	171.221	2012-07-22 19:12:00
4	Michael Kenn	1373	142203959478768454375479374259330640346359070988407	51	166.604	2011-12-13 14:36:00
5	Michael Kenn	2161	30553899007233789447243614436947582588570307358207	50	164.386	2012-06-08 18:22:00
6	Michael Kenn	1543	18333134391270351479674844445819664111063485906599	50	163.649	2012-01-01 09:31:00
7	Michael Kenn	1721	13017424887805605413748227640619647231549577734497	50	163.155	2012-02-03 11:45:00
8	Michael Kenn	1873	5229402747045184140993760927367968819643416915009	49	161.839	2012-03-01 07:57:00
9	Michael Kenn	2339	2384664180658980612438298393848609901964955383633	49	160.706	2012-07-22 19:12:00
10	Michael Kenn	2087	1144261721186669289407300288576366847993924905671	49	159.647	2012-05-20 06:37:00
11	Michael Kenn	2381	901939223649310421767556825677135846954351070231	48	159.304	2012-07-22 19:12:00
12	Michael Kenn	1601	651721340802484774748465566059561124091876550241	48	158.835	2012-01-01 09:31:00
13	Michael Kenn	2437	133810621934125887061607452990848675108065214529	48	156.551	2012-07-22 19:12:00
14	Michael Kenn	2243	25505344904088339250306780569062170259580500303	47	154.159	2012-06-08 18:22:00
15	Michael Kenn	1481	8348981870260729786758008817506660899281935231	46	152.548	2011-12-13 14:36:00
16	Michael Kenn	1601	6629233811254755661010566946657617349801918449	46	152.216	2011-12-13 14:36:00
17	Michael Kenn	1301	3172016620920990460580749619964431858642380903	46	151.152	2011-12-13 14:36:00
18	Michael Kenn	1787	414060352832351408864592081627544699350748937	45	148.215	2012-02-03 11:45:00
19	Michael Kenn	2339	312432273312026527069581365765802214010978497	45	147.808	2012-06-08 18:22:00
20	Michael Kenn	2221	109418482145790364835045802461263406980904623	45	146.295	2012-05-20 06:37:00
21	Michael Kenn	218279	39517444792635230199300256633	29	94.997	2012-03-18 12:32:00
22	Michael Kenn	210901	9003574313410750768450964497	28	92.863	2012-03-18 12:32:00
23	Michael Kenn	245783	970459431784756278114357353	27	89.649	2012-03-18 12:32:00
24	Michael Kenn	230539	782236018788964052034356959	27	89.338	2012-03-18 12:32:00
25	Michael Kenn	241469	369307517487848753824169207	27	88.255	2012-03-18 12:32:00
26	Michael Kenn	227561	720447918869540332680017	24	79.253	2012-03-18 12:32:00