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

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MnStatusDetails
2706139Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
15177606868843191650.4old
11640709594607984471960.02016-01-04 12:46:24
ECM
DigitsB1Curves
255000058 / 280
Estimated T-Level: 21.0
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-30alpertronF1A2A95EE44EDFD82013
Verified2017-11-15Oliver KruseF1A2A95EE44EDFD82263010613
History
DateUserTypeResult
2022-10-22USAFSSNF-PM1
B1=340000, B2=271226340
2017-11-15Oliver KruseC-PRP
M2706139/1517760686884319/1164070959460798447 : F1A2A95EE44EDFD8
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2706139/1164070959460798447/1517760686884319 : F1A2A95EE44EDFD8
PRP: Verified
PRP without proof (not generated)
2016-01-04TJAOIF
Factor: 1164070959460798447 / TF: 60-61