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
5483Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
888247619.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000011110 / 16550
Estimated T-Level: 48.4
TF below 2^156 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseA5FEE66E1A6665C01013
Verified2017-10-12kkmrkkblmbrbkA5FEE66E1A6665C0116713
Verified2020-04-17Oliver Kruse8618D22E92FDFBD21544053
Verified2024-02-03Wentao Huang8618D22E92FDFBD21239753
History
DateUserTypeResult
2024-06-25mikrNF-PM1
B1=500000000000, B2=1177314837267769200
2024-02-03Wentao HuangC-PRP
M5483/888247 : 8618D22E92FDFBD2
PRP: Verified
PRP without proof (small exponent)
2023-07-11-Anonymous-NF-PM1
B1=46000000000, B2=193133522175293700
2022-01-24Ethan O'ConnorNF-PM1
B1=1300000000
2020-04-17Oliver KruseC-PRP
M5483/888247 : 8618D22E92FDFBD2
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M5483/888247 : A5FEE66E1A6665C0
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M5483/888247 : A5FEE66E1A6665C0
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M5483/888247 : A5FEE66E1A6665C0
PRP without proof (not generated)