17 207 651 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
342244043414673228246071	24	78.2	2015-03-15 06:00:44

Status	Date	User	Residue	Shift
Verified (Factored)	2003-06-23	Randolph School	66E88EE7D521C3E1	3885030
Verified (Factored)	2006-10-24	Greg Goodwin	66E88EE7D521C3E1	10302041

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-03-09	riccardo uberti	08DA6DF905424234	1	10126701	5	3
Verified	2020-08-11	Jaytholomew	08DA6DF905424234	1	13473386	5	3

P-1 factors

Date	Factor	B1	B2
2015-03-15	342244043414673228246071	430000	9000000

History

Date	User	Type	Result
2024-08-18	nordi	NF-PM1	B1=500000, B2=254324994
2024-05-05	nordi	NF-PM1	B1=500000
2020-08-11	Jaytholomew	C-PRP	M17207651/342244043414673228246071 : 08DA6DF905424234 PRP: Verified PRP without proof (not generated)
2019-03-09	riccardo uberti	C-PRP	M17207651/342244043414673228246071 : 08DA6DF905424234 PRP: Verified PRP without proof (not generated)
2015-03-15	riccardo uberti	F-PM1	Factor: 342244043414673228246071 / (P-1, B1=430000, B2=9000000, E=12)
2014-09-05	Nesowa	NF	no factor from 2^66 to 2^67
2013-09-24	David Campeau	NF	no factor from 2^65 to 2^66