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

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MnStatusDetails
11554969Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
4881581527077242054430732478.72024-04-23 17:14:41
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2001-02-04Michael Schiansky4745663BFB5B378F604741
Verified (Factored)2004-04-29LexaTref4745663BFB5B378F165863
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-04-28FeritinF4670F8B4B734CDB1624516353
P-1 factors
DateFactorB1B2
2024-04-2348815815270772420544307325000007054972470
History
DateUserTypeResult
2024-04-29dreckkopfCERT
PRP Certification
Proof certified good
2024-04-28FeritinC-PRP
M11554969/488158152707724205443073 : F4670F8B4B734CDB
PRP proof power = 8
PRP: Verified
Proof certified good
2024-04-23linamentF-PM1
Factor: 488158152707724205443073 / (P-1, B1=2500000, B2=7054972470)
2024-04-22linamentNF-PM1
B1=2500000
2023-01-24Naegi MakotoNF
no factor from 2^71 to 2^72
2021-10-07mikrNF
no factor from 2^70 to 2^71
2021-09-28lycornNF
no factor from 2^69 to 2^70
2018-01-18ramgeisNF
no factor from 2^68 to 2^69
2018-01-18ramgeisNF
no factor from 2^67 to 2^68
2016-04-27ThaNF-PM1
B1=300000, B2=6000000, E=6
2016-01-15VictordeHollanderNF
no factor from 2^66 to 2^67
2014-12-20NesowaNF
no factor from 2^65 to 2^66
2013-11-07lycornNF
no factor from 2^64 to 2^65