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

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MnStatusDetails
2011363Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
84477247826.3old
40066350971031.92008-07-15 07:49:18
288067408871134.72008-07-15 07:49:17
5663193662811239.02008-07-15 07:49:18
ECM
DigitsB1Curves
2550000280 / 280
30250000115 / 640
Estimated T-Level: 25.9
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-05Oliver Kruse2A440476486720F21013
Verified2017-10-17Oliver Kruse8E15495721D7551C443296753
Verified2017-11-13ATH8E15495721D7551C4117871753
History
DateUserTypeResult
2025-05-11Stef42NF-PM1
B1=15000000, B2=173524082550
2017-11-13ATHC-PRP
M2011363/84477247/28806740887/4006635097/566319366281 : 8E15495721D7551C
PRP: Verified
PRP without proof (not generated)
2017-10-17Oliver KruseC-PRP
M2011363/84477247/28806740887/4006635097/566319366281 : 8E15495721D7551C
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M2011363/84477247/28806740887/4006635097/566319366281 : 2A440476486720F2
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-15J FeitsmaF
Factor: 566319366281
2008-07-15J FeitsmaF
Factor: 4006635097
2008-07-15J FeitsmaF
Factor: 28806740887