1 981 669 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
3282747235195295383567	22	71.5	2015-06-22 01:23:41

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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
Verified (Factored)		Thomas Honold	27DAD553304C8776	0
Verified (Factored)	1999-01-02	chris clark	27DAD553304C8776	366466

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	2316D59F83FF59C8	1	0	1	3
Verified	2017-10-20	Oliver Kruse	2316D59F83FF59C8	1	1530816	1	3

History

Date	User	Type	Result
2017-10-20	Oliver Kruse	C-PRP	M1981669/3282747235195295383567 : 2316D59F83FF59C8 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1981669/3282747235195295383567 : 2316D59F83FF59C8 PRP: Verified PRP without proof (not generated)
2015-06-22	guru	F-ECM	Factor: 3282747235195295383567 / (ECM curve 1, B1=50000, B2=5000000)
2015-03-15	lycorn	NF	no factor from 2^64 to 2^65
2015-03-15	lycorn	NF	no factor from 2^63 to 2^64
2011-07-01	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-01-28	kurly	NF-PM1	B1=1000000, B2=30000000
2009-12-19	S485122	NF	no factor from 2^60 to 2^61