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
1093927Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1535610965531237.2old
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)2025-09-01Kriesel7FB4F4AF4A805D9F013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-29Oliver Kruse4B23B1B5F4FF37C31013
Verified2017-10-16Oliver Kruse4B23B1B5F4FF37C3110270413
Verified2017-12-31ATH4B23B1B5F4FF37C3163486713
History
DateUserTypeResult
2025-09-02Will KCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
7FB4F4AF4A805D9F
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-10-07timc995NF-PM1
B1=2000000, B2=63130867800
2017-12-31ATHC-PRP
M1093927/153561096553 : 4B23B1B5F4FF37C3
PRP: Verified
PRP without proof (not generated)
2017-10-16Oliver KruseC-PRP
M1093927/153561096553 : 4B23B1B5F4FF37C3
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1093927/153561096553 : 4B23B1B5F4FF37C3
PRP: Verified
PRP without proof (not generated)