3 678 347 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
288743684346355272721	21	68.0	2009-08-27 22:48:59

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-02-24	Andrew Farr	9F42BF19443BCB74	0
Verified (Factored)	1999-08-16	Traian Stanev	9F42BF19443BCB74	1073299

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	681C1F9C5F3C4502	1	0	1	3
Verified	2017-11-28	Oliver Kruse	681C1F9C5F3C4502	1	1684478	1	3

History

Date	User	Type	Result
2022-05-25	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-05	Joss	NF-PM1	B1=90000
2017-11-28	Oliver Kruse	C-PRP	M3678347/288743684346355272721 : 681C1F9C5F3C4502 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3678347/288743684346355272721 : 681C1F9C5F3C4502 PRP: Verified PRP without proof (not generated)
2009-08-27	Sid & Andy	F-ECM	Factor: 288743684346355272721
2009-07-12	Carsten Kossendey	NF-PM1	B1=20000, B2=260000
2009-03-09	S485122	NF	no factor from 2^60 to 2^61