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

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Exponent Range:










MnStatusDetails
175621Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1053727720.0old
3792048740323991548.42014-04-04 10:22:22
ECM
DigitsB1Curves
2550000280 / 280
30250000628 / 640
Estimated T-Level: 29.9
TF below 2^94 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse457F3B29BB61CC852013
Verified2017-10-12kkmrkkblmbrbk457F3B29BB61CC85216068013
Verified2020-04-17Oliver Kruse285395646842E3B624708953
Verified2024-02-03Wentao Huang285395646842E3B6215631053
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M175621/1053727/379204874032399 : 285395646842E3B6
PRP proof power = 5
PRP: Verified
Proof certified good
2020-04-17Oliver KruseC-PRP
M175621/1053727/379204874032399 : 285395646842E3B6
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M175621/1053727/379204874032399 : 457F3B29BB61CC85
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M175621/1053727/379204874032399 : 457F3B29BB61CC85
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M175621/1053727/379204874032399 : 457F3B29BB61CC85
PRP without proof (not generated)
2017-04-23kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2014-04-04TJAOIF
Factor: 379204874032399