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
21289693Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 235000
B2 = 2702500
LL
StatusDateUserResidueShift
Verified2004-10-03Stephan GruppF5B61446EE29B6394310967
Verified2008-10-15Ars Technica Team Prime RibF5B61446EE29B6398064367
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
2018-04-22ramgeisNF
no factor from 2^69 to 2^70
2017-12-22VictordeHollanderNF
no factor from 2^68 to 2^69
2017-05-28ramgeisNF
no factor from 2^67 to 2^68
2015-04-22NRNF
no factor from 2^66 to 2^67