2 576 089 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
11917007461204724767851456719	29	93.3	2016-07-02 15:44:57

ECM

Digits	B1	Curves
25	50000	18 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Robert Kulagowski	C2547376F73E7E5D	0
Verified (Factored)	1999-04-13	James M. Wolford	C2547376F73E7E5D	1407782

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-15	Oliver Kruse	9465AA955D51A64D	1	2356324	5	3
Verified	2017-12-02	kkmrkkblmbrbk	9465AA955D51A64D	1	1335527	5	3

P-1 factors

Date	Factor	B1	B2
2016-07-02	11917007461204724767851456719	3200000	112000000

History

Date	User	Type	Result
2017-12-02	kkmrkkblmbrbk	C-PRP	M2576089/11917007461204724767851456719 : 9465AA955D51A64D PRP: Verified PRP without proof (not generated)
2017-10-15	Oliver Kruse	C-PRP	M2576089/11917007461204724767851456719 : 9465AA955D51A64D PRP: Verified PRP without proof (not generated)
2016-07-02	mikr	F-PM1	Factor: 11917007461204724767851456719 / (P-1, B1=3200000, B2=112000000, E=12)
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-08	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-19	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-10-07	markr	NF-PM1	B1=175000, B2=4112500, E=6
2011-01-11	Joss	NF-PM1	B1=50000
2010-12-21	Joss	NF-PM1	B1=20000
2009-02-01	Sturle Sunde	NF	no factor from 2^60 to 2^61