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

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MnStatusDetails
2126611Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
105780484912796576172063.2old
371031212296627543349388172684.92024-08-07 20:44:07
ECM
DigitsB1Curves
2550000280 / 280
30250000173 / 640
Estimated T-Level: 26.4 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ed Norris5C07EFB8BFCB54310
Verified (Factored)1999-01-29Guillaume Thomassin5C07EFB8BFCB5431556754
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-08Oliver KruseDA498F015F721C7F1013
Verified (Factored)2017-11-17kkmrkkblmbrbkDA498F015F721C7F124485113
Verified2024-08-07k0r389952219CB6AEF262102486853
History
DateUserTypeResult
2024-08-07Ryan PropperCERT
PRP Certification
Proof certified good
2024-08-07k0r3C-PRP
M2126611/10578048491279657617/37103121229662754334938817 : 89952219CB6AEF26
PRP proof power = 7
PRP: Verified
Proof certified good
2024-08-07k0r3F-ECM
Factor: 37103121229662754334938817 / (ECM curve 3, B1=81418, B2=86479575, Edwards Sigma=7976158630708187)
2017-11-17kkmrkkblmbrbkC-PRP
M2126611/10578048491279657617 : DA498F015F721C7F
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-08Oliver KruseC-PRP
M2126611/10578048491279657617 : DA498F015F721C7F
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12