2 717 413 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
61691831854518753603889	23	75.7	2011-04-23 10:38:27

ECM

Digits	B1	Curves
25	50000	121 / 280

Estimated T-Level: 22.2 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Robert Friberg	149BE3C868F6031A	0
Verified (Factored)	1999-07-27	Gerhard H Wrodnigg	149BE3C868F6031A	2353328

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-19	Oliver Kruse	CA5C9DB0E9F36E00	1	188543	5	3
Verified	2017-12-04	kkmrkkblmbrbk	CA5C9DB0E9F36E00	1	300682	5	3

History

Date	User	Type	Result
2023-02-25	USAFSS	NF-PM1	B1=300000, B2=235127970
2017-12-04	kkmrkkblmbrbk	C-PRP	M2717413/61691831854518753603889 : CA5C9DB0E9F36E00 PRP: Verified PRP without proof (not generated)
2017-10-19	Oliver Kruse	C-PRP	M2717413/61691831854518753603889 : CA5C9DB0E9F36E00 PRP: Verified PRP without proof (not generated)
2011-04-23	James Heinrich	F-PM1	Factor: 61691831854518753603889
2011-01-18	Joss	NF-PM1	B1=50000
2010-12-28	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-31	Sturle Sunde	NF	no factor from 2^60 to 2^61