12 942 883 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
225413592969005724263	21	67.6	2015-08-16 12:50:22

Status	Date	User	Residue	Shift
Verified (Factored)	2002-07-14	Chris Halsall	ED390DDD95918D23	8252421
Verified (Factored)	2004-10-03	Tofer Chagnon	ED390DDD95918D23	1293896

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-05-25	XZT	818382B237DC7855	1	5994000	5	3

P-1 factors

Date	Factor	B1	B2
2015-08-16	225413592969005724263	300000	6000000

History

Date	User	Type	Result
2022-05-25	suichi	CERT	PRP Certification Proof certified good
2022-05-25	XZT	C-PRP	M12942883/225413592969005724263 : 818382B237DC7855 PRP proof power = 8 PRP: Verified Proof certified good
2015-08-16	Tha	F-PM1	Factor: 225413592969005724263 / (P-1, B1=300000, B2=6000000, E=6)
2015-04-16	Tha	NF	no factor from 2^66 to 2^67
2014-05-12	Nesowa	NF	no factor from 2^65 to 2^66
2013-05-31	lycorn	NF	no factor from 2^64 to 2^65