Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnDetails
5105897
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
61270764011032.5old
3099483714891238.22008-09-08 01:26:51
151868472834791443.82008-09-30 21:43:56
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
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkAAE07B0BE65A932A3013
Verified
PRP without proof (not generated)
2018-05-07storm5510AAE07B0BE65A932A3312700613
History
DateUserTypeResult
2025-02-24Sid & AndyNF-PM1B1=3600000, B2=9211762560
2025-01-27Sid & AndyNFno factor TF: 68-70
2024-07-30cramsey87NF-PM1B1=300000, B2=104169030
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-05-07storm5510C-PRP
M5105897/6127076401/309948371489/15186847283479 : AAE07B0BE65A932A
2017-09-20kkmrkkblmbrbkC-PRPM5105897/15186847283479/309948371489/6127076401 : AAE07B0BE65A932A
2008-09-30markrFFactor: 15186847283479
2008-09-08Will EdgingtonFFactor: 309948371489