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

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MnStatusDetails
603443Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
18541208585111340.8old
167114227681618249137672373.82015-08-21 09:48:40
ECM
DigitsB1Curves
2550000280 / 280
30250000214 / 640
Estimated T-Level: 26.7
TF below 2^84 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-27Oliver KruseFF0A4A71559EAFC72013
Verified2017-10-13Oliver KruseFF0A4A71559EAFC7257911413
Verified2017-12-16ATHFF0A4A71559EAFC7220212213
Verified2020-04-19Oliver Kruse24D0F20E50EA81F8253008253
Verified2025-01-28kkmrkkblmbrbk24D0F20E50EA81F827927453
History
DateUserTypeResult
2025-01-28CPU - 2 - BTUCERT
PRP Certification
Proof certified good
2025-01-28kkmrkkblmbrbkC-PRP
M603443/1854120858511/16711422768161824913767 : 24D0F20E50EA81F8
PRP proof power = 6
PRP: Verified
Proof certified good
2022-12-08USAFSSNF-PM1
B1=1750000, B2=5543237700
2020-04-19Oliver KruseC-PRP
M603443/1854120858511/16711422768161824913767 : 24D0F20E50EA81F8
PRP: Verified
PRP without proof (small exponent)
2017-12-16ATHC-PRP
M603443/1854120858511/16711422768161824913767 : FF0A4A71559EAFC7
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M603443/1854120858511/16711422768161824913767 : FF0A4A71559EAFC7
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M603443/1854120858511/16711422768161824913767 : FF0A4A71559EAFC7
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=1000000, B2=30000000, E=12
2015-08-21TJAOIF-ECM
Factor: 16711422768161824913767 / (ECM curve 87, B1=50000, B2=5000000)