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

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MnStatusDetails
4521827Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
20850929509673873686812270.82010-01-19 02:46:52
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David A McGough46E3516512D13BF70
Verified (Factored)1999-12-01Claude Abraham46E3516512D13BF72917886
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbkA8111352A175323E1013
Verified2018-02-20Oliver KruseA8111352A175323E1323293313
History
DateUserTypeResult
2023-06-21USAFSSNF-PM1
B1=336000, B2=220317240
2018-02-20Oliver KruseC-PRP
M4521827/2085092950967387368681 : A8111352A175323E
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4521827/2085092950967387368681 : A8111352A175323E
PRP: Verified
PRP without proof (not generated)
2010-01-19TydusF-ECM
Factor: 2085092950967387368681