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
441421Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
20305367824.3old
ECM
DigitsB1Curves
2550000280 / 280
30250000328 / 640
Estimated T-Level: 27.6
TF below 2^87 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-24Oliver Kruse1EBB1B7F6D2E2D101013
Verified2017-09-24Oliver Kruse1EBB1B7F6D2E2D101013
Verified2017-11-09kkmrkkblmbrbk1EBB1B7F6D2E2D1012881713
Verified2020-04-18Oliver Kruse98503285B57F222A140824453
Verified2024-11-05kkmrkkblmbrbk98503285B57F222A124266153
History
DateUserTypeResult
2024-11-05Chun sung sooCERT
PRP Certification
Proof certified good
2024-11-05kkmrkkblmbrbkC-PRP
M441421/20305367 : 98503285B57F222A
PRP proof power = 6
PRP: Verified
Proof certified good
2020-04-18Oliver KruseC-PRP
M441421/20305367 : 98503285B57F222A
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M441421/20305367 : 1EBB1B7F6D2E2D10
PRP: Verified
PRP without proof (small exponent)
2017-09-24Oliver KruseC-PRP
M441421/20305367 : 1EBB1B7F6D2E2D10
PRP: Verified
PRP without proof (not generated)
2017-09-24Oliver KruseC-PRP
M441421/20305367 : 1EBB1B7F6D2E2D10
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=3000000, B2=100000000, E=12