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
2409731Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
101208703926.6old
3030784958495738871858.12015-08-07 11:06:24
ECM
DigitsB1Curves
2550000146 / 280
Estimated T-Level: 22.6
TF below 2^70 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-13Oliver KruseF3A08C7AD13A49B7259633453
Verified2017-11-26ATHF3A08C7AD13A49B72145362053
History
DateUserTypeResult
2018-09-28alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-26ATHC-PRP
M2409731/101208703/303078495849573887 : F3A08C7AD13A49B7
PRP: Verified
PRP without proof (not generated)
2017-10-13Oliver KruseC-PRP
M2409731/101208703/303078495849573887 : F3A08C7AD13A49B7
PRP: Verified
PRP without proof (not generated)
2015-08-07TJAOIF
Factor: 303078495849573887 / TF: 58-59