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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
74506469Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 615000
B2 = 9686250
LL
StatusDateUserResidueShift
Verified2016-06-17electron1897DCC7E625849EEAC651237226
Verified2024-11-26Bernhard HelmesDCC7E625849EEAC672771347
History
DateUserTypeResult
2024-11-26Bernhard HelmesC-LL
DCC7E625849EEAC6
2016-06-17electron1897C-LL
DCC7E625849EEAC6
2016-04-02Mark RoseNF
no factor from 2^57 to 2^64
2015-11-08TheJudgerNF-PM1
B1=615000, B2=9686250
2015-10-26blipNF
no factor from 2^74 to 2^75
2015-10-26blipNF
no factor from 2^73 to 2^74
2015-10-08Judge HaleNF
no factor from 2^72 to 2^73
2015-08-19Judge HaleNF
no factor from 2^71 to 2^72
2013-05-10JMGarciaNF
no factor from 2^70 to 2^71
2012-12-04Massimo Cappelli (ik5pwa)NF
no factor from 2^69 to 2^70
2010-09-28MarzbugNF
no factor from 2^68 to 2^69
2010-09-24drewha - BelarusNF
no factor from 2^67 to 2^68
2010-09-18drewha - BelarusNF
no factor from 2^66 to 2^67
2010-07-12-Anonymous-NF
no factor from 2^65 to 2^66
2010-07-11riccardo ubertiNF
no factor from 2^64 to 2^65