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

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MnStatusDetails
6288427Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
5924327033878625380065470892788.92023-05-14 23:24:49
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)1999-01-10Tom CarneyA3942CD356D004D50
Verified (Factored)2001-04-08Kevin ArimaA3942CD356D004D52802053
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-05-15Naegi MakotoD618E4C154B35C191446811253
P-1 factors
DateFactorB1B2
2023-05-1459243270338786253800654708950000005000000
History
DateUserTypeResult
2023-05-16Jonathan WebbCERT
PRP Certification
Proof certified good
2023-05-15Naegi MakotoC-PRP
M6288427/592432703387862538006547089 : D618E4C154B35C19
PRP proof power = 7
PRP: Verified
Proof certified good
2023-05-14Naegi MakotoNF-PM1
B1=5000000, B2=30476275830
2023-05-14Naegi MakotoF-PM1
Factor: 592432703387862538006547089 / (P-1, B1=5000000)
2021-09-21SRBaseNF
no factor from 2^71 to 2^72
2021-08-09SRBaseNF
no factor from 2^70 to 2^71
2021-01-31takahashiNF
no factor from 2^69 to 2^70
2020-04-17takahashiNF
no factor from 2^68 to 2^69
2020-02-27takahashiNF-PM1
B1=700000, B2=15000000, E=12
2018-06-01ramgeisNF
no factor from 2^67 to 2^68
2016-03-26Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-16snme2pm1NF
no factor from 2^65 to 2^66
2014-09-14monstNF
no factor from 2^64 to 2^65
2014-09-12NesowaNF
no factor from 2^63 to 2^64
2011-06-06markrNF-PM1
B1=160000, B2=3480000, E=6