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
1088777Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2099858873291237.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-09-01Kriesel4A526A63D9BD6C22013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-29Oliver Kruse574F9B10BE1DB12F1013
Verified2017-10-16Oliver Kruse574F9B10BE1DB12F119616513
Verified2018-01-03ATH574F9B10BE1DB12F13428713
History
DateUserTypeResult
2025-09-01Cameran430CERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
4A526A63D9BD6C22
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-10-05timc995NF-PM1
B1=2000000, B2=63130867800
2018-01-03ATHC-PRP
M1088777/209985887329 : 574F9B10BE1DB12F
PRP: Verified
PRP without proof (not generated)
2017-10-16Oliver KruseC-PRP
M1088777/209985887329 : 574F9B10BE1DB12F
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1088777/209985887329 : 574F9B10BE1DB12F
PRP: Verified
PRP without proof (not generated)