Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
36878377Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 271
P-1
B1 = 500000
B2 = 10000000
LL
StatusDateUserResidueShift
Bad2007-04-07C. Cooper / S. Boone99DEEBF8FD30FC7E30143903
Verified2015-07-16MadPoo4CB3D7EAE409F03331651320
Verified2016-01-03Alexander Dubrovin4CB3D7EAE409F03312180484
History
DateUserTypeResult
2024-05-21James HeinrichNF
no factor from 2^68 to 2^69
2022-08-06Sid & AndyNF
no factor from 2^72 to 2^73
2022-07-04Jon PaceNF
no factor from 2^71 to 2^72
2016-01-03Alexander DubrovinC-LL
4CB3D7EAE409F033
2015-12-18HBendtzNF-PM1
B1=500000, B2=10000000, e=12
2015-07-16MadPooC-LL
4CB3D7EAE409F033
2014-11-19NickOfTimeNF
no factor from 2^70 to 2^71
2014-10-07Andrew BNF
no factor from 2^69 to 2^70
2012-10-31Carsten KossendeyNF
no factor from 2^68 to 2^69
2012-04-22NumberwangNF
no factor from 2^67 to 2^68