Marin Mersenne 2^P-1
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MnStatusDetails
7486873Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
10076127749667938057128145332592342733739126.22023-04-25 17:32:12
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Paul Victor Novarese9336A0FA2D3CCF230
Verified (Factored)1999-06-15Glenn Langford9336A0FA2D3CCF231889739
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-04-28Naegi Makoto28D5CC255CA04DE01273311653
P-1 factors
DateFactorB1B2
2023-04-25100761277496679380571281453325923427337310000012118216110
History
DateUserTypeResult
2023-04-28curtiscCERT
PRP Certification
Proof certified good
2023-04-28Naegi MakotoC-PRP
M7486873/100761277496679380571281453325923427337 : 28D5CC255CA04DE0
PRP proof power = 8
PRP: Verified
Proof certified good
2023-04-25DRobinsonPEF-PM1
Factor: 100761277496679380571281453325923427337 / (P-1, B1=3100000, B2=12118216110)
2021-09-30SRBaseNF
no factor from 2^71 to 2^72
2021-08-16SRBaseNF
no factor from 2^70 to 2^71
2019-10-10USAFSSNF-PM1
B1=440000, B2=13640000, E=12
2018-04-13YxinityNF
no factor from 2^69 to 2^70
2018-04-13YxinityNF
no factor from 2^68 to 2^69
2016-06-23america64NF
no factor from 2^67 to 2^68
2016-05-27america64NF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2014-01-17lycornNF
no factor from 2^64 to 2^65
2013-10-24NesowaNF
no factor from 2^63 to 2^64
2012-09-08NesowaNF-PM1
B1=90000, B2=1687500, E=6
2009-06-25Carsten KossendeyNF-PM1
B1=40000, B2=640000, E=6