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
266401Factored
FactorDigitsBitsDate
45836956071032.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000446 / 640
Estimated T-Level: 28.5
TF below 2^90 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver KruseCDC549343847BE4D1013
Verified2017-10-12Oliver KruseCDC549343847BE4D122343513
Verified2017-11-06kkmrkkblmbrbkCDC549343847BE4D17362913
Unverified (Reliable)2020-04-17Oliver KruseA48CFC7012A61F__114155953
History
DateUserTypeResult
2022-03-20Lisander ViaeneNF-PM1
B1=5550000, B2=25042991610
2022-03-19Lisander ViaeneNF-PM1
B1=5550000
2022-01-03Lisander ViaeneNF-PM1
B1=100000
2020-04-17Oliver KruseC-PRP
M266401/4583695607 : A48CFC7012A61F__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M266401/4583695607 : CDC549343847BE4D
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M266401/4583695607 : CDC549343847BE4D
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M266401/4583695607 : CDC549343847BE4D
PRP: Unverified (Reliable)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M266401/4583695607 : CDC549343847BE4D
PRP without proof (not generated)