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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MnDetails
5066993
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 270
TF target 265
Factored
FactorDigitsBitsDate
4320219571671238.7old
1363508315572080071856.92015-05-11 11:40:05
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)
2017-09-20kkmrkkblmbrbk2E783E45ED630BE62013
Verified
PRP without proof (not generated)
2018-04-29storm55102E783E45ED630BE62481827213
History
DateUserTypeResult
2025-02-03Sid & AndyNF-PM1B1=5100000, B2=7342323450
2025-01-16Sid & AndyNFno factor TF: 68-70
2023-05-11This -Anonymous-NF-PM1B1=50000, B2=1000000
2018-04-29storm5510C-PRP
M5066993/432021957167/136350831557208007 : 2E783E45ED630BE6
2017-09-20kkmrkkblmbrbkC-PRPM5066993/136350831557208007/432021957167 : 2E783E45ED630BE6
2015-05-11TJAOIFFactor: 136350831557208007