2 609 401 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
32025081352597794977	20	64.8	2010-12-15 04:49:07

ECM

Digits	B1	Curves
25	50000	85 / 280

Estimated T-Level: 21.5 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-03-03	Joel Armengaud	CF3E93F35AD6A884	0
Verified (Factored)	1999-04-13	Timothy Graham	CF3E93F35AD6A884	2518475

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-15	Oliver Kruse	8E5AF92774DF3032	1	1383476	5	3
Verified	2017-12-02	kkmrkkblmbrbk	8E5AF92774DF3032	1	2084415	5	3

History

Date	User	Type	Result
2022-03-11	LordJulius	NF	no factor from 2^1 to 2^60
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-02	kkmrkkblmbrbk	C-PRP	M2609401/32025081352597794977 : 8E5AF92774DF3032 PRP: Verified PRP without proof (not generated)
2017-10-15	Oliver Kruse	C-PRP	M2609401/32025081352597794977 : 8E5AF92774DF3032 PRP: Verified PRP without proof (not generated)
2010-12-15	markr	F-PM1	Factor: 32025081352597794977
2010-11-17	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61