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
147571Factored
FactorDigitsBitsDate
2662982983217843389212167.92008-01-21 06:04:35
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000184 / 1566
Estimated T-Level: 30.6 ⓘ
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 KruseE39E031094537C121013
Verified2017-10-11kkmrkkblmbrbkE39E031094537C1213494913
Verified2020-04-17Oliver Kruse6C18E36A50AA3EE1111786553
Verified2024-02-03Wentao Huang6C18E36A50AA3EE111785253
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M147571/266298298321784338921 : 6C18E36A50AA3EE1
PRP proof power = 5
PRP: Verified
Proof certified good
2022-02-28LordJuliusNF
no factor from 2^54 to 2^55
2020-04-17Oliver KruseC-PRP
M147571/266298298321784338921 : 6C18E36A50AA3EE1
PRP: Verified
PRP without proof (small exponent)
2017-10-11kkmrkkblmbrbkC-PRP
M147571/266298298321784338921 : E39E031094537C12
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M147571/266298298321784338921 : E39E031094537C12
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M147571/266298298321784338921 : E39E031094537C12
PRP without proof (not generated)
2017-04-22kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2008-01-21Team_BunduF-ECM
Factor: 266298298321784338921