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

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Exponent Range:





MnDetails
8490563
Composite, with 8 known prime factors. Cofactor is composite.
Trial Factored to 271
TF target 268
Factored
FactorDigitsBitsDate
16981127824.0old
12396221991030.22008-09-08 04:34:20
4692394547591238.82008-09-08 04:34:20
655048293940091445.92008-09-30 23:52:45
2240948424653271547.72014-03-12 11:26:41
8074073035803371549.52014-05-06 12:22:30
96149516382544367771963.12016-12-06 16:17:21
22746808362429454961382732580.92021-08-26 21:32:31
P-1 factors
DateFactorsB1B2
2021-08-27No new factors discovered10000001000000
2021-08-262274680836242945496138273
300000300000
ECM
DigitsB1Curves
255000033 / 280
Estimated T-Level: 20.6 ⓘ
TF below 2^63 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
PRP without proof (not generated)
2018-11-07Luigi Morelli8472C712F40278367245237453
Factored
PRP without proof (not generated)
2020-06-15ATH8472C712F40278367271343153
Verified
Certified Good
2021-08-27H Michaelson8472C712F40278368206510153
History
DateUserTypeResult
2022-04-10James HeinrichNFno factor TF: 65-66
2022-04-10James HeinrichNFno factor TF: 64-65
2022-04-09LordJuliusNFno factor TF: 65-66
2022-04-09LordJuliusNFno factor TF: 64-65
2021-12-29Seth_TrNF-PM1B1=100000000, B2=16100000000
2021-12-09nordiNF-PM1B1=6000000, B2=6107621520
2021-08-27Ben DeloCERT
Proof certified good
2021-08-27H MichaelsonC-PRPM8490563/16981127/1239622199/469239454759/65504829394009/224094842465327/807407303580337/9614951638254436777/2274680836242945496138273 : 8472C712F4027836
Proof Certified Good

Proof Power: 8

2021-08-27H MichaelsonNF-PM1B1=1000000, B2=100000000
2021-08-27H MichaelsonF-PM1Factor: 11425729625039821695819453211758709593539952015773836676673472955691200553881613114642445384502582551 / B1=30
2021-08-27H MichaelsonF-PM1Factor: 11425729625039821695819453211758709593539952015773836676673472955691200553881613114642445384502582551 / B1=1000000
2021-08-27Seth_TrNF-PM1B1=1000000, B2=100000000
2021-08-26Seth_TrNFno factor TF: 70-71
2021-08-26Seth_TrNFno factor TF: 69-70
2021-08-26Seth_TrNFno factor TF: 68-69
2021-08-26Seth_TrF-PM1Factor: 2274680836242945496138273 / B1=300000
2020-06-15ATHC-PRPM8490563/16981127/1239622199/469239454759/65504829394009/224094842465327/807407303580337/9614951638254436777 : 8472C712F4027836
2019-12-17Seth_TrNFno factor TF: 67-68
2019-06-18Seth_TrNFno factor TF: 66-67
2018-11-07Luigi MorelliC-PRPM8490563/16981127/1239622199/469239454759/65504829394009/224094842465327/807407303580337/9614951638254436777 : 8472C712F4027836
2016-12-06TJAOIFFactor: 9614951638254436777
2014-05-06TJAOIFFactor: 807407303580337
2014-03-12TJAOIFFactor: 224094842465327
2008-09-30markrFFactor: 65504829394009
2008-09-08Will EdgingtonFFactor: 469239454759
2008-09-08Will EdgingtonFFactor: 1239622199