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
243787Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
22419534393284900471961.0old
ECM
DigitsB1Curves
2550000280 / 280
30250000625 / 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 Kruse2042243389A401821013
Verified2017-10-12Oliver Kruse2042243389A4018213826413
Verified2017-11-06kkmrkkblmbrbk2042243389A40182110666613
Verified2020-04-17Oliver KruseE3A3237BB3B72B86111595153
Verified2024-02-03Wentao HuangE3A3237BB3B72B8618939753
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M243787/2241953439328490047 : E3A3237BB3B72B86
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-10Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-07-24Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M243787/2241953439328490047 : E3A3237BB3B72B86
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M243787/2241953439328490047 : 2042243389A40182
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M243787/2241953439328490047 : 2042243389A40182
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M243787/2241953439328490047 : 2042243389A40182
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M243787/2241953439328490047 : 2042243389A40182
PRP without proof (not generated)