Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
328067Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
603039636731135.8old
665776788033591445.92008-08-26 20:13:11
ECM
DigitsB1Curves
2550000280 / 280
30250000606 / 640
Estimated T-Level: 29.7
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 Kruse71E5929B4F131BCC2013
Verified2017-10-13Oliver Kruse71E5929B4F131BCC220126913
Verified2017-12-12ATH71E5929B4F131BCC27947413
Verified2020-04-18Oliver KruseDD60F3766B58ED02216419953
Verified2024-09-06kkmrkkblmbrbkDD60F3766B58ED02216983253
History
DateUserTypeResult
2024-10-07yuriy_5-1NF-PM1
B1=12000002, B2=2107215910800
2024-09-06PoaoCERT
PRP Certification
Proof certified good
2024-09-06kkmrkkblmbrbkC-PRP
M328067/60303963673/66577678803359 : DD60F3766B58ED02
PRP proof power = 5
PRP: Verified
Proof certified good
2023-03-24Denial140NF-PM1
B1=1000000, B2=20563492950
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-18Oliver KruseC-PRP
M328067/60303963673/66577678803359 : DD60F3766B58ED02
PRP: Verified
PRP without proof (small exponent)
2017-12-12ATHC-PRP
M328067/60303963673/66577678803359 : 71E5929B4F131BCC
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M328067/60303963673/66577678803359 : 71E5929B4F131BCC
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M328067/60303963673/66577678803359 : 71E5929B4F131BCC
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M328067/60303963673/66577678803359 : 71E5929B4F131BCC
PRP without proof (not generated)
2008-08-26-Anonymous-F
Factor: 66577678803359