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
4646017Factored
FactorDigitsBitsDate
850945106276294870572066.22018-07-06 22:08:10
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-09-27Ray StrubingerF13CA893B6FEF8C00
Verified (Factored)1999-12-15Tony GrazianoF13CA893B6FEF8C02690876
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-07-07_p95holder_276F74DBAE2ABF231150418553
Verified2018-07-08arnaud276F74DBAE2ABF23124080453
History
DateUserTypeResult
2018-07-08arnaudC-PRP
M4646017/85094510627629487057 : 276F74DBAE2ABF23
PRP: Verified
PRP without proof (not generated)
2018-07-07_p95holder_C-PRP
M4646017/85094510627629487057 : 276F74DBAE2ABF23
PRP: Verified
PRP without proof (not generated)
2018-07-06BloodERazorF
Factor: 85094510627629487057 / TF: 66-67
2018-06-22Ismo LaitelaNF-PM1
B1=1988203, B2=61634303, E=12
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-07snme2pm1NF
no factor from 2^65 to 2^66
2015-02-03monstNF
no factor from 2^64 to 2^65
2015-02-02JayderNF
no factor from 2^63 to 2^64
2012-02-05Squeeky_SquirrelNF-PM1
B1=110000, B2=2090000, E=6
2011-12-09GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-07-21markrNF
no factor from 2^61 to 2^62
2009-09-06Carsten KossendeyNF-PM1
B1=25000, B2=381250