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

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Exponent Range:










MnStatusDetails
21330403Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 520000
B2 = 30055000
LL
StatusDateUserResidueShift
Verified2004-07-13C. Cooper / S. Boone3A38C9CF1A88365E1105248
Verified2008-10-15Sylvester Ziolkowski3A38C9CF1A88365E342079
History
DateUserTypeResult
2021-10-31TheJudgerNF
no factor from 2^73 to 2^74
2021-10-31TheJudgerNF
no factor from 2^72 to 2^73
2021-10-01-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-14SRBaseNF
no factor from 2^70 to 2^71
2021-04-17Architects CubedNF-PM1
B1=520000, B2=30055000
2018-04-15ramgeisNF
no factor from 2^69 to 2^70
2017-12-22VictordeHollanderNF
no factor from 2^68 to 2^69
2017-04-27ramgeisNF
no factor from 2^67 to 2^68
2015-05-01NRNF
no factor from 2^66 to 2^67