1 089 941 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
32698231	8	25.0	old
9960265391512913977	19	63.1	2016-12-15 12:27:43
382213456004368174679	21	68.4	2017-06-09 09:21:10

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Type	Base
Verified (Factored)	2025-09-01	Kriesel	47EC0CF4B036DAA3	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	671802831C3CF71E	3	0	1	3
Verified	2017-10-16	Oliver Kruse	671802831C3CF71E	3	164571	1	3

History

Date	User	Type	Result
2025-09-02	J. Gareth "Kit" Moreton	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-01	Kriesel	C-PRP	47EC0CF4B036DAA3 PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2024-10-05	timc995	NF-PM1	B1=2000000, B2=63130867800
2017-10-16	Oliver Kruse	C-PRP	M1089941/32698231/9960265391512913977/382213456004368174679 : 671802831C3CF71E PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1089941/32698231/382213456004368174679/9960265391512913977 : 671802831C3CF71E PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1089941/32698231/9960265391512913977/382213456004368174679 : 671802831C3CF71E PRP without proof (not generated)
2017-06-09	TJAOI	F-ECM	Factor: 382213456004368174679 / (ECM curve 37, B1=50000, B2=5000000)
2016-12-15	TJAOI	F	Factor: 9960265391512913977 / TF: 63-64