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
5066231Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 272
TF target 265
P-1
B1 = 4000000
B2 = 9313940790
ECM
DigitsB1Curves
2550000148 / 280
Estimated T-Level: 22.6 ⓘ
LL
StatusDateUserResidueShift
Verified1998-06-20Mischa Kenn82822B1FE88D3BF30
Verified2000-09-08Michael Schiansky82822B1FE88D3BF33529478
History
DateUserTypeResult
2022-05-10Sid & AndyNF-PM1
B1=4000000, B2=9313940790
2021-11-08ATHNF-PP1
Start=2/7, B1=2500000, B2=90000000
2021-04-03-Anonymous-NF
no factor from 2^71 to 2^72
2021-04-01-Anonymous-NF
no factor from 2^70 to 2^71
2021-04-01-Anonymous-NF
no factor from 2^69 to 2^70
2021-01-25TJAOINF
no factor from 2^68 to 2^69
2018-06-11ramgeisNF
no factor from 2^67 to 2^68
2017-07-03mikrNF-PM1
B1=1500000, B2=45000000, E=12
2016-03-15YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-08-02snme2pm1NF
no factor from 2^65 to 2^66
2014-12-14VictordeHollanderNF
no factor from 2^64 to 2^65
2014-12-14VictordeHollanderNF
no factor from 2^63 to 2^64
2009-08-12USAFSSNF-PM1
B1=60000, B2=1065000, E=6
2009-08-08GrunwalderGIMPNF
no factor from 2^1 to 2^63
2008-12-28Sturle SundeNF
no factor from 2^61 to 2^62