5 775 571 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 4 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
843244917143	12	39.6	old
157687905227070809	18	57.1	2015-05-27 11:12:00
7091111607048387137	19	62.6	2016-09-12 11:29:26
42049232139841591481	20	65.2	2018-07-17 10:22:39

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	9890167ADBC105E9	3	0	1	3
Verified	2018-07-24	_p95holder_	2A11CF23E1FD70AF	4	1996140	5	3
Verified	2018-07-25	kkmrkkblmbrbk	2A11CF23E1FD70AF	4	4315881	5	3

History

Date	User	Type	Result
2023-05-12	This -Anonymous-	NF-PM1	B1=50000, B2=1000000, E=6
2022-04-24	J.R. Allen	NF	no factor from 2^64 to 2^65
2022-04-24	J.R. Allen	NF	no factor from 2^63 to 2^64
2022-04-24	J.R. Allen	F	Factor: 843244917143 / TF: 1-62
2022-04-24	J.R. Allen	F	Factor: 157687905227070809 / TF: 1-62
2018-07-25	kkmrkkblmbrbk	C-PRP	M5775571/843244917143/157687905227070809/7091111607048387137/42049232139841591481 : 2A11CF23E1FD70AF PRP: Verified PRP without proof (not generated)
2018-07-24	_p95holder_	C-PRP	M5775571/843244917143/157687905227070809/7091111607048387137/42049232139841591481 : 2A11CF23E1FD70AF PRP: Verified PRP without proof (not generated)
2018-07-17	TJAOI	F	Factor: 42049232139841591481 / TF: 65-66
2017-09-20	kkmrkkblmbrbk	C-PRP	M5775571/157687905227070809/7091111607048387137/843244917143 : 9890167ADBC105E9 PRP: Verified PRP without proof (not generated)
2016-09-12	TJAOI	F	Factor: 7091111607048387137 / TF: 62-63
2015-05-27	TJAOI	F	Factor: 157687905227070809 / TF: 57-58