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
286049Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
219685633927.7old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000211 / 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 Kruse8A97EE7EE5CBE74A1013
Verified2017-10-12Oliver Kruse8A97EE7EE5CBE74A125188713
Verified2017-11-06kkmrkkblmbrbk8A97EE7EE5CBE74A18257513
Verified2020-04-17Oliver KruseC0DA55CA0AF711AF120823453
Verified2024-08-12kkmrkkblmbrbkC0DA55CA0AF711AF111893853
History
DateUserTypeResult
2024-11-14yuriy_5-1NF-PM1
B1=26316508, B2=6442766380050
2024-08-12Rob SartainCERT
PRP Certification
Proof certified good
2024-08-12kkmrkkblmbrbkC-PRP
M286049/219685633 : C0DA55CA0AF711AF
PRP proof power = 5
PRP: Verified
Proof certified good
2023-02-16USAFSSNF-PM1
B1=4000000, B2=22109179950
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M286049/219685633 : C0DA55CA0AF711AF
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M286049/219685633 : 8A97EE7EE5CBE74A
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M286049/219685633 : 8A97EE7EE5CBE74A
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M286049/219685633 : 8A97EE7EE5CBE74A
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M286049/219685633 : 8A97EE7EE5CBE74A
PRP without proof (not generated)