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
3481927Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
62674687825.9old
123611767654253991753.52014-09-25 11:21:29
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-04kkmrkkblmbrbk9DC416A28969F95A2013
Verified2017-11-23Oliver Kruse9DC416A28969F95A221173113
History
DateUserTypeResult
2022-08-07JossNF-PM1
B1=3481927, B2=3516076200
2022-06-02LordJuliusNF
no factor from 2^66 to 2^67
2022-05-27LordJuliusNF
no factor from 2^64 to 2^65
2022-05-27LordJuliusNF
no factor from 2^63 to 2^64
2022-05-27LordJuliusNF
no factor from 2^62 to 2^63
2021-12-29JossNF-PM1
B1=3481927, B2=129960600
2021-12-28JossNF-PM1
B1=3481927
2021-10-23JossNF
no factor from 2^67 to 2^68
2021-02-24JossNF
no factor from 2^65 to 2^66
2021-02-18JossNF-PM1
B1=348192, B2=7312046, E=6
2021-02-18JossNF-PM1
B1=348192, B2=3830119, E=6
2017-11-23Oliver KruseC-PRP
M3481927/62674687/12361176765425399 : 9DC416A28969F95A
PRP: Verified
PRP without proof (not generated)
2017-10-04kkmrkkblmbrbkC-PRP
M3481927/62674687/12361176765425399 : 9DC416A28969F95A
PRP: Verified
PRP without proof (not generated)
2014-09-25TJAOIF
Factor: 12361176765425399 / TF: 53-54