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
4809443Factored
FactorDigitsBitsDate
215559235271134.3old
2773348520970459918172167.92019-06-05 04:59:03
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-11-20Oliver KruseA054AF5D57B8C3BA1311536453
Verified (Factored)2018-01-07kkmrkkblmbrbkA054AF5D57B8C3BA1181121453
Verified2019-06-05ATHA054AF5D57B8C3BA2275490253
History
DateUserTypeResult
2023-10-26USAFSSNF-PM1
B1=240000, B2=91991760
2019-06-05ATHC-PRP
M4809443/21555923527/277334852097045991817 : A054AF5D57B8C3BA
PRP: Verified
PRP without proof (not generated)
2019-06-05ATHF-ECM
Factor: 277334852097045991817 / (ECM curve 2, B1=50000, B2=5000000, Sigma=2466058833542662)
2018-01-07kkmrkkblmbrbkC-PRP
M4809443/21555923527 : A054AF5D57B8C3BA
PRP: Verified
PRP without proof (not generated)
2017-11-20Oliver KruseC-PRP
M4809443/21555923527 : A054AF5D57B8C3BA
PRP: Verified
PRP without proof (not generated)