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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MnStatusDetails
18097787Factored
FactorDigitsBitsDate
1263582538364212098683751726463332103.32022-02-22 01:12:36
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Bad2003-03-07Eric HaseltineFC1ED5877028D1617306604
Verified (Factored)2004-02-14Jim Hunt0CDF52541C0DF61414619907
Verified (Factored)2007-04-07TheJudger0CDF52541C0DF61414548318
P-1 factors
DateFactorB1B2
2022-02-22126358253836421209868375172646331000000419364660
History
DateUserTypeResult
2022-02-22Sid & AndyF-PM1
Factor: 12635825383642120986837517264633 / (P-1, B1=1000000, B2=419364660)
2021-11-08RichD0NF
no factor from 2^72 to 2^73
2021-10-08-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-11SRBaseNF
no factor from 2^70 to 2^71
2020-03-10lycornNF
no factor from 2^69 to 2^70
2017-09-15ramgeisNF
no factor from 2^68 to 2^69
2016-06-14mikrNF
no factor from 2^67 to 2^68
2014-08-17NesowaNF
no factor from 2^66 to 2^67