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

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MnStatusDetails
1098301Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
369029137928.5old
10016505131029.92008-07-16 09:31:22
1267791533142769226911192476.72017-03-31 11:16:35
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)2025-09-01KrieselA5618F6A593E119B013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-05Oliver KruseB4F1943B3FFE14743013
Verified2017-10-19kkmrkkblmbrbkB4F1943B3FFE1474389328313
History
DateUserTypeResult
2025-09-02pilot no moreCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
A5618F6A593E119B
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-10-12timc995NF-PM1
B1=2000000, B2=110685865290
2017-10-19kkmrkkblmbrbkC-PRP
M1098301/369029137/1001650513/126779153314276922691119 : B4F1943B3FFE1474
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1098301/369029137/1001650513/126779153314276922691119 : B4F1943B3FFE1474
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1098301/369029137/1001650513/126779153314276922691119 : B4F1943B3FFE1474
PRP without proof (not generated)
2017-03-31TJAOIF-ECM
Factor: 126779153314276922691119 / (ECM curve 21, B1=50000, B2=5000000)
2008-07-16J FeitsmaF
Factor: 1001650513