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
283097Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2264777721.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000220 / 1566
Estimated T-Level: 30.7
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseD47D8FD033DCFA7D1013
Verified2017-10-12Oliver KruseD47D8FD033DCFA7D114226713
Verified2017-11-06kkmrkkblmbrbkD47D8FD033DCFA7D113932313
Verified2020-04-17Oliver Kruse7AD964C175864CDB14708853
Verified2024-08-10kkmrkkblmbrbk7AD964C175864CDB114398553
History
DateUserTypeResult
2024-11-11yuriy_5-1NF-PM1
B1=26044924, B2=6348019808130
2024-08-10Luke DurantCERT
PRP Certification
Proof certified good
2024-08-10kkmrkkblmbrbkC-PRP
M283097/2264777 : 7AD964C175864CDB
PRP proof power = 5
PRP: Verified
Proof certified good
2023-02-15USAFSSNF-PM1
B1=3500000, B2=18264117300
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M283097/2264777 : 7AD964C175864CDB
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M283097/2264777 : D47D8FD033DCFA7D
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M283097/2264777 : D47D8FD033DCFA7D
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M283097/2264777 : D47D8FD033DCFA7D
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M283097/2264777 : D47D8FD033DCFA7D
PRP without proof (not generated)