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
8318813
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
5465027858663276831112168.92012-07-30 20:23:55
P-1 factors
DateFactorsB1B2
2012-07-30546502785866327683111
950001662500
ECM
DigitsB1Curves
255000016 / 280
Estimated T-Level: 20.3
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
Factored2000-03-08jamey rankin698115A8E6C6C6A6812927Windows,Prime95,v18,(aka WU1)
Factored2002-10-26Xandy Johnson698115A8E6C6C6A67192809Windows,Prime95,v20,NT service,(aka WW5)
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-10Oliver Kruse031AB50D868E0B541676752753
Verified
PRP without proof (not generated)
2020-04-24Nesowa031AB50D868E0B541185790053
History
DateUserTypeResult
2025-01-03Stef42NF-PM1B1=1109000, B2=1520760150
2021-05-12firejugglerNF-PP1Start=6/5, B1=500000, B2=26000000
2021-04-30firejugglerNF-PP1Start=2/7, B1=500000, B2=26500000
2020-04-24NesowaC-PRPM8318813/546502785866327683111 : 031AB50D868E0B54
2018-10-10Oliver KruseC-PRPM8318813/546502785866327683111 : 031AB50D868E0B54
2012-07-30firejugglerF-PM1Factor: 546502785866327683111
2002-10-26-anonymous-C-LL698115A8E6C6C6A6
2002-09-07-anonymous-NF-PM1B1=40000, B2=390000
2000-03-08-anonymous-C-LL698115A8E6C6C6A6
1999-12-15Mark BlankeNFno factor TF: 1-64
1999-04-13-anonymous-NFno factor TF: 1-63
1998-09-20-anonymous-NFno factor TF: 1-62