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

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MnStatusDetails
4658603Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
158460528150647451386808057767503875063472143140.22023-02-28 20:51:04
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-09-20Chris Cummings4D3B1FB4A4FFDE280
Verified (Factored)2000-01-12Kim Oldfield4D3B1FB4A4FFDE283517084
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-03-02Naegi Makoto51FA4A6168BBB9F01128838853
P-1 factors
DateFactorB1B2
2023-02-281584605281506474513868080577675038750634721430000011204171550
History
DateUserTypeResult
2023-03-02curtiscCERT
PRP Certification
Proof certified good
2023-03-02Naegi MakotoC-PRP
M4658603/1584605281506474513868080577675038750634721 : 51FA4A6168BBB9F0
PRP proof power = 7
PRP: Verified
Proof certified good
2023-02-28Sid & AndyF-PM1
Factor: 1584605281506474513868080577675038750634721 / (P-1, B1=4300000, B2=11204171550)
2021-03-23-Anonymous-NF
no factor from 2^71 to 2^72
2021-03-16-Anonymous-NF
no factor from 2^70 to 2^71
2021-03-16-Anonymous-NF
no factor from 2^69 to 2^70
2021-03-16-Anonymous-NF
no factor from 2^68 to 2^69
2018-10-18chuenkitNF
no factor from 2^67 to 2^68
2018-06-09BloodERazorNF
no factor from 2^66 to 2^67
2018-01-23Ismo LaitelaNF-PM1
B1=1988203, B2=61634303, E=12
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-08snme2pm1NF
no factor from 2^65 to 2^66
2015-02-07monstNF
no factor from 2^64 to 2^65
2015-02-06JayderNF
no factor from 2^63 to 2^64
2012-02-14Squeeky_SquirrelNF-PM1
B1=110000, B2=2090000, E=6
2011-12-09GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-07-18markrNF
no factor from 2^61 to 2^62
2009-08-30Carsten KossendeyNF-PM1
B1=25000, B2=375000