8 697 343 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
12435903549308871889	20	63.4	old

Status	Date	User	Residue	Shift
Verified (Factored)	1999-12-30	Ashish Das	5A0159062C4C2537	6280756
Verified (Factored)	2003-05-04	Ars Technica Team Prime Rib	5A0159062C4C2537	1303505

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-12-27	ATH	A01B5CF77DE1DB57	1	2090775	5	3
Verified	2020-08-22	marssystems	A01B5CF77DE1DB57	1	8129400	5	3

History

Date	User	Type	Result
2025-05-03	beep	NF-PM1	B1=1900000, B2=10268428170
2020-08-22	marssystems	C-PRP	M8697343/12435903549308871889 : A01B5CF77DE1DB57 PRP: Verified PRP without proof (not generated)
2018-12-27	ATH	C-PRP	M8697343/12435903549308871889 : A01B5CF77DE1DB57 PRP: Verified PRP without proof (not generated)