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

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Exponent Range:










MnStatusDetails
74973973Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 690000
B2 = 14490000
LL
StatusDateUserResidueShift
Verified2015-07-12-Anonymous-8E3245A1D6015F6937676849
Verified2024-03-17Andrei Amosov8E3245A1D6015F6932943589
History
DateUserTypeResult
2024-03-17Andrei AmosovC-LL
8E3245A1D6015F69
2016-04-02Mark RoseNF
no factor from 2^61 to 2^64
2015-07-12-Anonymous-C-LL
8E3245A1D6015F69
2015-03-11NickOfTimeNF
no factor from 2^74 to 2^75
2014-09-01James HeinrichNF-PM1
B1=690000, B2=14490000, E=12
2014-08-29NickOfTimeNF
no factor from 2^73 to 2^74
2014-08-29NickOfTimeNF
no factor from 2^72 to 2^73
2014-08-29NickOfTimeNF
no factor from 2^71 to 2^72
2014-08-28Mark RoseNF
no factor from 2^70 to 2^71
2012-10-22SWL551NF
no factor from 2^69 to 2^70
2010-08-02chargerNF
no factor from 2^68 to 2^69
2010-07-26John TollyNF
no factor from 2^67 to 2^68
2010-07-23John TollyNF
no factor from 2^66 to 2^67
2010-07-21Charles SpaltonNF
no factor from 2^65 to 2^66
2010-07-16SAHS Science DeptNF
no factor from 2^64 to 2^65