Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
153828839Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
200261870319179463015649836972994.02025-04-19 03:52:04
P-1 factors
DateFactorB1B2
2025-04-192002618703191794630156498369789200082174290
History
DateUserTypeResult
2025-04-19LOBESF-PM1
Factor: 20026187031917946301564983697 / (P-1, B1=892000, B2=82174290)
2024-12-23IffyNF
no factor from 2^76 to 2^77
2024-08-22SRBaseNF
no factor from 2^75 to 2^76
2023-02-14SRBaseNF
no factor from 2^74 to 2^75
2021-11-29SRBaseNF
no factor from 2^73 to 2^74
2017-06-23Nguyen Huy AnhNF
no factor from 2^72 to 2^73
2017-06-22glennpatNF
no factor from 2^71 to 2^72
2017-06-20Peter PiksaNF
no factor from 2^70 to 2^71
2017-06-12La GüiraNF
no factor from 2^69 to 2^70
2017-03-01rubikvn2100NF
no factor from 2^68 to 2^69
2016-04-28Nice MarmotNF
no factor from 2^67 to 2^68
2015-04-05guruNF
no factor from 2^66 to 2^67
2013-01-28sasaki3NF
no factor from 2^65 to 2^66
2011-01-20sasaki3NF
no factor from 2^64 to 2^65
2010-06-25Torchwood InstituteNF
no factor from 2^63 to 2^64