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

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MnStatusDetails
38197477Composite, with 9 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
229184863927.8old
15278990811030.52008-09-10 02:27:32
167304949271134.02008-09-10 02:27:32
14426423113371340.42008-09-10 02:27:32
26758860537591341.32008-09-10 02:27:32
24398084570333511651.12008-09-10 02:27:32
311680040719483077432064.82018-01-04 16:19:54
4707933378248803282492168.72019-12-08 19:31:28
23818263278232605128092271.02019-12-13 05:13:44
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-05-21Jaytholomew350E877C2529465092633481453
Verified2021-01-10Richard Thomas350E877C2529465092693706153
History
DateUserTypeResult
2022-04-06James HeinrichNF
no factor from 2^65 to 2^66
2022-01-02Seth_TrNF-PM1
B1=25000000, B2=2500692480
2021-09-14Seth_TrNF-PM1
B1=4000000, B2=400000000
2021-08-06Seth_TrNF
no factor from 2^71 to 2^72
2021-08-06Seth_TrNF
no factor from 2^70 to 2^71
2021-08-06Seth_TrNF
no factor from 2^69 to 2^70
2021-08-06Seth_TrNF
no factor from 2^68 to 2^69
2021-01-10David BarinaCERT
PRP Certification
Proof certified good
2021-01-10Richard ThomasC-PRP
M38197477/229184863/1527899081/16730494927/1442642311337/2675886053759/2439808457033351/31168004071948307743/470793337824880328249/2381826327823260512809 : 350E877C25294650
PRP proof power = 9
PRP: Verified
Proof certified good
2020-05-21JaytholomewC-PRP
M38197477/229184863/1527899081/16730494927/1442642311337/2675886053759/2439808457033351/31168004071948307743/470793337824880328249/2381826327823260512809 : 350E877C25294650
PRP: Verified
PRP without proof (not generated)
2020-01-03Seth_TrNF
no factor from 2^76 to 2^77
2019-12-31Seth_TrNF
no factor from 2^75 to 2^76
2019-12-15Seth_TrNF
no factor from 2^74 to 2^75
2019-12-15Seth_TrNF
no factor from 2^73 to 2^74
2019-12-15Seth_TrNF
no factor from 2^72 to 2^73
2019-12-14Seth_TrNF-PM1
B1=1000000, B2=100000000, E=12
2019-12-13Seth_TrF
Factor: 2381826327823260512809 / TF: 71-72
2019-12-08Seth_TrF
Factor: 470793337824880328249 / TF: 68-69
2019-06-20Seth_TrNF
no factor from 2^67 to 2^68
2019-06-17Seth_TrNF
no factor from 2^66 to 2^67
2018-01-04TJAOIF
Factor: 31168004071948307743 / TF: 64-65
2008-09-10Will EdgingtonF
Factor: 2439808457033351
2008-09-10Will EdgingtonF
Factor: 2675886053759
2008-09-10Will EdgingtonF
Factor: 1442642311337
2008-09-10Will EdgingtonF
Factor: 16730494927
2008-09-10Will EdgingtonF
Factor: 1527899081