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
15826841Factored
FactorDigitsBitsDate
155795986891222290375772112338935900137120.22016-02-22 13:35:06
LL
StatusDateUserResidueShift
Verified (Factored)2002-08-31Nicolas Creehan2FB3AF4D4EE5FE6B7353389
Verified (Factored)2006-02-01Yeonsoo Yun2FB3AF4D4EE5FE6B13950721
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-06-25M Miller535F96667ECC1DD51569928153
Verified2020-09-18Jaytholomew535F96667ECC1DD51399663853
P-1 factors
DateFactorB1B2
2016-02-2215579598689122229037577211233893590013000000
History
DateUserTypeResult
2023-09-19nordiNF-PM1
B1=480000, B2=264402600
2023-08-14nordiNF-PM1
B1=480000
2022-04-11LordJuliusNF
no factor from 2^67 to 2^68
2022-03-27LordJuliusNF
no factor from 2^65 to 2^66
2020-09-18Valerio BellizzomiCERT
PRP Certification
Proof certified good
2020-09-18JaytholomewC-PRP
M15826841/1557959868912222903757721123389359001 : 535F96667ECC1DD5
PRP proof power = 8
PRP: Verified
Proof certified good
2020-06-25M MillerC-PRP
M15826841/1557959868912222903757721123389359001 : 535F96667ECC1DD5
PRP: Verified
PRP without proof (not generated)
2016-02-22ThaF-PM1
Factor: 1557959868912222903757721123389359001 / (P-1, B1=300000)
2014-07-20NesowaNF
no factor from 2^66 to 2^67