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
1093201Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
71626529531032.7old
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)2025-09-01Kriesel648E7320C6DF9CF7013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-29Oliver Kruse71E9CC8279CD4C3E1013
Verified2017-10-16Oliver Kruse71E9CC8279CD4C3E188183213
Verified2017-12-31ATH71E9CC8279CD4C3E181279913
History
DateUserTypeResult
2025-09-02KIMCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
648E7320C6DF9CF7
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-10-06timc995NF-PM1
B1=2000000, B2=63130867800
2017-12-31ATHC-PRP
M1093201/7162652953 : 71E9CC8279CD4C3E
PRP: Verified
PRP without proof (not generated)
2017-10-16Oliver KruseC-PRP
M1093201/7162652953 : 71E9CC8279CD4C3E
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1093201/7162652953 : 71E9CC8279CD4C3E
PRP: Verified
PRP without proof (not generated)