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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Exponent Range:










MnStatusDetails
40977869Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 495000
B2 = 14107500
LL
StatusDateUserResidueShift
Verified2009-12-15lozcs86EE5E7B1F76ABC429090723
Verified2017-05-06C. Williamson86EE5E7B1F76ABC422982237
History
DateUserTypeResult
2024-05-29mrhNF
no factor from 2^68 to 2^69
2022-05-02Sid & AndyNF
no factor from 2^72 to 2^73
2017-05-06C. WilliamsonC-LL
86EE5E7B1F76ABC4
2015-06-07TheJudgerNF
no factor from 2^71 to 2^72
2014-12-27Mark RoseNF
no factor from 2^70 to 2^71
2014-12-27Mark RoseNF
no factor from 2^69 to 2^70
2013-10-31Carsten KossendeyNF
no factor from 2^68 to 2^69
2009-12-15lozcsC-LL
86EE5E7B1F76ABC4
2009-02-28MCASNF-PM1
B1=495000, B2=14107500