8 125 927 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
1065566605334047	16	49.9	old
1258105147178202150767	22	70.1	2022-12-08 17:14:54
277463237619111579753761273	27	87.8	2022-12-08 17:14:54

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2018-08-24	Oliver Kruse	CE50CE0056F25E56	1	59949	5	3
Verified (Factored)	2020-02-13	marssystems	CE50CE0056F25E56	1	817018	5	3
Verified	2022-12-09	Flaukrotist	CE50CE0056F25E56	3	6378489	5	3

P-1 factors

Date	Factor	B1	B2
2022-12-08	349077927401332849758008918026447442106471846391	2200000	1908376140

History

Date	User	Type	Result
2023-04-16	Flaukrotist	NF	no factor from 2^68 to 2^69
2022-12-09	Jonathan Webb	CERT	PRP Certification Proof certified good
2022-12-09	Flaukrotist	C-PRP	M8125927/1065566605334047/277463237619111579753761273/1258105147178202150767 : CE50CE0056F25E56 PRP proof power = 8 PRP: Verified Proof certified good
2022-12-08	Flaukrotist	F-PM1	Factors: 277463237619111579753761273,1258105147178202150767 / (P-1, B1=2200000, B2=1908376140)
2022-03-29	Flaukrotist	NF	no factor from 2^67 to 2^68
2020-02-13	marssystems	C-PRP	M8125927/1065566605334047 : CE50CE0056F25E56 PRP: Verified (Factored) PRP without proof (not generated)
2018-08-24	Oliver Kruse	C-PRP	M8125927/1065566605334047 : CE50CE0056F25E56 PRP: Verified (Factored) PRP without proof (not generated)