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

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MnStatusDetails
1095833Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
10147413591029.9old
1849515377409611547.42014-03-05 11:29:48
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)2025-09-01KrieselC90FB6428F33435C013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-29Oliver KruseAC549481106550972013
Verified2017-10-16Oliver KruseAC5494811065509729966213
Verified2017-12-31ATHAC54948110655097250850213
History
DateUserTypeResult
2025-09-02gregor_krannichCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
C90FB6428F33435C
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-10-07timc995NF-PM1
B1=2000000, B2=63130867800
2017-12-31ATHC-PRP
M1095833/1014741359/184951537740961 : AC54948110655097
PRP: Verified
PRP without proof (not generated)
2017-10-16Oliver KruseC-PRP
M1095833/1014741359/184951537740961 : AC54948110655097
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1095833/1014741359/184951537740961 : AC54948110655097
PRP: Verified
PRP without proof (not generated)
2014-03-05TJAOIF
Factor: 184951537740961