Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnDetails
8332171
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
353532400569286143292064.92014-01-07 06:37:02
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
Factored2000-04-27Dennis Burke2913BBE4099D874E689902Linux 32-bit,Prime95,v18,(aka WU2)
Factored2002-12-09Erik Alvis2913BBE4099D874E1464924Windows,Prime95,v22,(aka WY1)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-13EthanD44230E0DA8FA84571178238853
Verified
PRP without proof (not generated)
2020-04-22ATH44230E0DA8FA84571611862653
History
DateUserTypeResult
2025-03-14beepNF-PM1B1=1750000, B2=6798611820
2020-04-22ATHC-PRP
M8332171/35353240056928614329 : 44230E0DA8FA8457
2018-10-13EthanDC-PRP
M8332171/35353240056928614329 : 44230E0DA8FA8457
2014-01-07David CampeauFFactor: 35353240056928614329 / TF: 64-65
2012-08-02firejugglerNF-PM1B1=95000, B2=1662500, E=6
2002-12-09-anonymous-C-LL2913BBE4099D874E
2002-12-02-anonymous-NF-PM1B1=45000, B2=652500, E=4
2000-04-27-anonymous-C-LL2913BBE4099D874E
1999-11-10MadPoo 🙂NFno factor TF: 1-64
1998-10-18AmperioNFno factor TF: 1-63
1998-09-06sssvsNFno factor TF: 1-62