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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
41270987Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 500000
B2 = 14500000
LL
StatusDateUserResidueShift
Verified2009-06-16Alan NishiokaD24BC3CD91B947BD28058166
Verified2015-09-21demfloroD24BC3CD91B947BD9076941
History
DateUserTypeResult
2024-06-14James HeinrichNF
no factor from 2^68 to 2^69
2022-05-11Sid & AndyNF
no factor from 2^72 to 2^73
2015-09-21demfloroC-LL
D24BC3CD91B947BD
2015-08-17AirSquirrelsNF
no factor from 2^71 to 2^72
2015-01-08chalsallNF
no factor from 2^70 to 2^71
2014-12-31chalsallNF
no factor from 2^69 to 2^70
2013-12-12Carsten KossendeyNF
no factor from 2^68 to 2^69
2009-06-16Alan NishiokaC-LL
D24BC3CD91B947BD
2009-05-09Alan NishiokaNF-PM1
B1=500000, B2=14500000, E=6