Marin Mersenne 2^P-1
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MnStatusDetails
2477213Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
7163092833643937025805032479.22021-05-15 10:59:02
ECM
DigitsB1Curves
2550000127 / 280
Estimated T-Level: 22.3 ⓘ
TF below 2^69 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Stefan Muth4B748B865B8E456D0
Verified (Factored)1999-05-16Kent Lee4B748B865B8E456D1629155
Verified (Factored)2018-05-29kkmrkkblmbrbk4B748B865B8E456D328335
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-05-15tottenhoffE0CBAE580EEE1AE51158749553
History
DateUserTypeResult
2021-05-16Mark FilipskiCERT
PRP Certification
Proof certified good
2021-05-15tottenhoffC-PRP
M2477213/716309283364393702580503 : E0CBAE580EEE1AE5
PRP proof power = 7
PRP: Verified
Proof certified good
2021-05-15kutensF-ECM
Factor: 716309283364393702580503 / (ECM curve 5, B1=50000, B2=5150000, Sigma=3008421939098261)
2019-05-27TJAOINF
no factor from 2^67 to 2^68
2018-05-29kkmrkkblmbrbkC-LL
4B748B865B8E456D
2017-07-22Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-10-28ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-21mikrNF-PM1
B1=2382500, B2=85770100, E=12
2014-09-02JossNF-PM1
B1=120910
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-08Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-20Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-11-20JossNF-PM1
B1=20000
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61