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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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MnStatusDetails
485171Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
23863193855531341.1old
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.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-26Oliver Kruse3C4C1FC2B5E7F6FF1013
Verified2017-09-27Oliver Kruse3C4C1FC2B5E7F6FF1013
Verified2017-11-09kkmrkkblmbrbk3C4C1FC2B5E7F6FF14404313
Verified2020-04-18Oliver Kruse72F16B01D6DC836015200653
Verified2024-11-26kkmrkkblmbrbk72F16B01D6DC836015671853
History
DateUserTypeResult
2024-11-27techn1ciaNCERT
PRP Certification
Proof certified good
2024-11-26kkmrkkblmbrbkC-PRP
M485171/2386319385553 : 72F16B01D6DC8360
PRP proof power = 6
PRP: Verified
Proof certified good
2024-08-22cramsey87NF-PM1
B1=7000000, B2=42834594660
2020-04-18Oliver KruseC-PRP
M485171/2386319385553 : 72F16B01D6DC8360
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M485171/2386319385553 : 3C4C1FC2B5E7F6FF
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M485171/2386319385553 : 3C4C1FC2B5E7F6FF
PRP: Verified
PRP without proof (not generated)
2017-09-26Oliver KruseC-PRP
M485171/2386319385553 : 3C4C1FC2B5E7F6FF
PRP: Verified
PRP without proof (not generated)