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:





MnDetails
5085427
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
303412248106014011754.8old
8554368483433109241004972479.52025-01-16 06:55:29
P-1 factors
DateFactorsB1B2
2025-01-16855436848343310924100497
36000009117768660
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
Factored
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbk245773FD55FCA1131013
Factored
PRP without proof (not generated)
2018-05-02storm5510245773FD55FCA1131135650113
Verified
Certified Good
2025-01-23Jason Lynch6DB41ED8A658D786287678553
History
DateUserTypeResult
2025-01-23GuayabitaCERT
Proof certified good
2025-01-23Jason LynchC-PRPM5085427/30341224810601401/855436848343310924100497 : 6DB41ED8A658D786
Proof Certified Good

Proof Power: 7

2025-01-21Sid & AndyNFno factor TF: 68-70
2025-01-16Sid & AndyF-PM1Factor: 855436848343310924100497 / B1=3600000, B2=9117768660
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-05-02storm5510C-PRPM5085427/30341224810601401 : 245773FD55FCA113
2017-09-20kkmrkkblmbrbkC-PRPM5085427/30341224810601401 : 245773FD55FCA113