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

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MnStatusDetails
486391Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
439211274314752252703125120561353734111.82014-06-07 04:44:41
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski2360
Verified (Factored)Brian J. BeesleyD84F81EDE703C2360
Verified (Factored)Charles F. Kerchner IIID84F81EDE703C2360
Verified (Factored)Eivind TrielD84F81EDE703C236162208
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-26Oliver KruseED4BC22857909B6F1013
Verified2017-09-27Oliver KruseED4BC22857909B6F1013
Verified2017-11-09kkmrkkblmbrbkED4BC22857909B6F121707013
Verified2020-04-18Oliver Kruse738E0BC525A129B5142211653
Verified2024-11-27kkmrkkblmbrbk738E0BC525A129B5112060353
History
DateUserTypeResult
2024-11-27George WoltmanCERT
PRP Certification
Proof certified good
2024-11-27kkmrkkblmbrbkC-PRP
M486391/4392112743147522527031251205613537 : 738E0BC525A129B5
PRP proof power = 6
PRP: Verified
Proof certified good
2022-03-07LordJuliusNF
no factor from 2^58 to 2^60
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-18Oliver KruseC-PRP
M486391/4392112743147522527031251205613537 : 738E0BC525A129B5
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M486391/4392112743147522527031251205613537 : ED4BC22857909B6F
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M486391/4392112743147522527031251205613537 : ED4BC22857909B6F
PRP: Verified
PRP without proof (not generated)
2017-09-26Oliver KruseC-PRP
M486391/4392112743147522527031251205613537 : ED4BC22857909B6F
PRP: Verified
PRP without proof (not generated)
2014-06-07swildnerF-ECM
Factor: 4392112743147522527031251205613537
2012-10-11markrNF-PM1
B1=20000000, B2=1000000000, E=12
2011-12-23Sid & AndyNF
no factor from 2^60 to 2^61
2010-11-26Rob_DeeNF-PM1
B1=1000000, B2=2000000, E=6
2010-11-25Rob_DeeNF-PM1
B1=500000, B2=1000000