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
1076447Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
5118117964091238.9old
146049208186516484172063.72017-03-03 13:21:53
1233363386555326431192166.72017-03-03 13:21:54
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)2025-09-01KrieselF68A52A5F0BA347D013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-05Oliver Kruse9C9310EC77C3B64B3013
Verified2017-10-16Oliver Kruse9C9310EC77C3B64B343196813
Verified2018-01-01ATH9C9310EC77C3B64B350357613
History
DateUserTypeResult
2025-09-01akaerstCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
F68A52A5F0BA347D
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-08-22cramsey87NF-PM1
B1=3000000, B2=22221719520
2018-01-01ATHC-PRP
M1076447/511811796409/14604920818651648417/123336338655532643119 : 9C9310EC77C3B64B
PRP: Verified
PRP without proof (not generated)
2017-10-16Oliver KruseC-PRP
M1076447/511811796409/14604920818651648417/123336338655532643119 : 9C9310EC77C3B64B
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1076447/511811796409/14604920818651648417/123336338655532643119 : 9C9310EC77C3B64B
PRP: Verified
PRP without proof (not generated)
2017-09-28Oliver KruseC-PRP
M1076447/511811796409/14604920818651648417/123336338655532643119 : 9C9310EC77C3B64B
PRP without proof (not generated)
2017-03-03TJAOIF-ECM
Factor: 123336338655532643119 / (ECM curve 45, B1=50000, B2=5000000)
2017-03-03TJAOIF-ECM
Factor: 14604920818651648417 / (ECM curve 12, B1=50000, B2=5000000)