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

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Exponent Range:










MnStatusDetails
73256551Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 730000
B2 = 16242500
LL
StatusDateUserResidueShift
Verified2017-06-22Dmitriy DegtiarevA969A8E727B3B0FF44590121
Verified2024-04-22Peter_ButlerA969A8E727B3B0FF21085813
History
DateUserTypeResult
2024-04-22Peter_ButlerC-LL
A969A8E727B3B0FF
2017-06-22Dmitriy DegtiarevC-LL
A969A8E727B3B0FF
2016-05-23Kevin JagetNF
no factor from 2^74 to 2^75
2015-11-22Judge HaleNF
no factor from 2^73 to 2^74
2015-09-13TheJudgerNF-PM1
B1=730000, B2=16242500, E=12
2015-09-09RichD0NF
no factor from 2^72 to 2^73
2015-04-05RichD0NF
no factor from 2^71 to 2^72
2013-04-25frmarNF
no factor from 2^70 to 2^71
2012-10-06SMoffatNF
no factor from 2^69 to 2^70
2010-10-14subgeniusNF
no factor from 2^68 to 2^69
2010-10-11symalladNF
no factor from 2^67 to 2^68
2010-08-07Bold_SeekerNF
no factor from 2^66 to 2^67
2010-08-06Bold_SeekerNF
no factor from 2^65 to 2^66
2010-08-05Bold_SeekerNF
no factor from 2^64 to 2^65
2008-06-28George WoltmanNF
no factor to 2^64