2 992 403 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
45711651870340167051797575537	29	95.2	2019-11-01 11:05:27

ECM

Digits	B1	Curves
25	50000	125 / 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)	1998-06-01	Mark James	2978AAD83EA437EA	0
Verified (Factored)	1999-05-16	Xan Tolbert	2978AAD83EA437EA	2529671
Verified (Factored)	2018-10-22	kkmrkkblmbrbk	2978AAD83EA437EA	708782

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-11-02	mnd9	D1A5920C6A3A30D8	1	1771198	5	3
Verified	2019-11-02	ATH	D1A5920C6A3A30D8	1	2485069	5	3

P-1 factors

Date	Factor	B1	B2
2019-11-01	45711651870340167051797575537	3000000	90000000

History

Date	User	Type	Result
2019-11-02	ATH	C-PRP	M2992403/45711651870340167051797575537 : D1A5920C6A3A30D8 PRP: Verified PRP without proof (not generated)
2019-11-02	mnd9	C-PRP	M2992403/45711651870340167051797575537 : D1A5920C6A3A30D8 PRP: Verified PRP without proof (not generated)
2019-11-01	BigBrother	F-PM1	Factor: 45711651870340167051797575537 / (P-1, B1=3000000, B2=90000000, E=12)
2018-12-28	chuenkit	NF	no factor from 2^67 to 2^68
2018-10-22	kkmrkkblmbrbk	C-LL	2978AAD83EA437EA
2017-12-07	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-03-23	Joss	NF-PM1	B1=353341, B2=3533410, E=6
2017-02-25	Joss	NF-PM1	B1=294451, B2=2944510, E=6
2016-12-23	Joss	NF-PM1	B1=204480
2016-10-26	Joss	NF-PM1	B1=170400
2016-08-23	Joss	NF-PM1	B1=142000, B2=4785000, E=6
2016-02-24	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-05	lycorn	NF	no factor from 2^64 to 2^65
2015-02-05	lycorn	NF	no factor from 2^63 to 2^64
2013-01-07	dbaugh	NF	no factor from 2^62 to 2^63
2011-11-24	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-10-21	markr	NF-PM1	B1=110000, B2=2392500, E=6
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61