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
248021Factored
FactorDigitsBitsDate
49108159825.5old
ECM
DigitsB1Curves
2550000280 / 280
30250000495 / 640
Estimated T-Level: 28.9
TF below 2^91 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse626F7106373B67AB1013
Verified2017-10-12Oliver Kruse626F7106373B67AB124064513
Verified2017-11-06kkmrkkblmbrbk626F7106373B67AB116719813
Verified2020-04-17Oliver Kruse0C47CF1AF5EDA96B121979453
Verified2024-02-03Wentao Huang0C47CF1AF5EDA96B17290853
History
DateUserTypeResult
2024-02-03curtiscCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M248021/49108159 : 0C47CF1AF5EDA96B
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-16Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-08-05Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M248021/49108159 : 0C47CF1AF5EDA96B
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M248021/49108159 : 626F7106373B67AB
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M248021/49108159 : 626F7106373B67AB
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M248021/49108159 : 626F7106373B67AB
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M248021/49108159 : 626F7106373B67AB
PRP without proof (not generated)