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
117563Factored
FactorDigitsBitsDate
16681846732547811131960.52008-01-10 10:59:14
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000232 / 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 Kruse4E56B9C98F8DB14E1013
Verified2017-10-13kkmrkkblmbrbk4E56B9C98F8DB14E111574513
Verified2020-04-17Oliver KruseE5F5FD149A32E2E416260353
Verified2024-02-03Wentao HuangE5F5FD149A32E2E413007053
History
DateUserTypeResult
2024-02-03cswigerCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M117563/1668184673254781113 : E5F5FD149A32E2E4
PRP proof power = 5
PRP: Verified
Proof certified good
2020-04-17Oliver KruseC-PRP
M117563/1668184673254781113 : E5F5FD149A32E2E4
PRP: Verified
PRP without proof (small exponent)
2018-10-27J.R. AllenNF
no factor from 2^1 to 2^57
2017-10-13kkmrkkblmbrbkC-PRP
M117563/1668184673254781113 : 4E56B9C98F8DB14E
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M117563/1668184673254781113 : 4E56B9C98F8DB14E
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M117563/1668184673254781113 : 4E56B9C98F8DB14E
PRP without proof (not generated)
2017-02-22kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2008-01-10Team_BunduF-ECM
Factor: 1668184673254781113