6 475 247 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
5657749814448430753	19	62.3	old
42606216814043640047	20	65.2	2018-07-25 09:40:20
84698126564996780257	20	66.2	2019-11-27 14:36:31

Status	Date	User	Residue	Shift
Verified (Factored)	2000-04-12	Paul Tice	922AA8EA89E1CAF6	5939804
Verified (Factored)	2001-08-04	Tom Schoemaker	922AA8EA89E1CAF6	5582977

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2018-01-01	trebor	278ABE8672E29560	1	5217983	5	3
Verified (Factored)	2018-07-30	_p95holder_	278ABE8672E29560	2	3007976	5	3
Verified	2019-11-28	mnd9	278ABE8672E29560	3	4462793	5	3

History

Date	User	Type	Result
2023-02-23	USAFSS	NF-PM1	B1=410000, B2=165801090
2022-03-20	LordJulius	NF	no factor from 2^64 to 2^65
2019-11-28	mnd9	C-PRP	M6475247/5657749814448430753/42606216814043640047/84698126564996780257 : 278ABE8672E29560 PRP: Verified PRP without proof (not generated)
2019-11-27	TJAOI	F	Factor: 84698126564996780257 / TF: 66-67
2018-07-30	_p95holder_	C-PRP	M6475247/5657749814448430753/42606216814043640047 : 278ABE8672E29560 PRP: Verified PRP without proof (not generated)
2018-07-25	TJAOI	F	Factor: 42606216814043640047 / TF: 65-66
2018-01-01	trebor	C-PRP	M6475247/5657749814448430753 : 278ABE8672E29560 PRP: Verified PRP without proof (not generated)