2 510 743 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
1321678496489171035487	22	70.2	2018-11-08 00:11:40
25988683166981566701487	23	74.5	2018-01-12 11:25:34

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)		Alex and Nick Myrman	9B9EC	0
Bad		Dax Prather	5139EBE1B9F79CCD	0
Verified (Factored)		Sturle Sunde	F92660632499B9EC	0
Verified (Factored)		Brian J. Beesley	F92660632499B9EC	1917799
Verified (Factored)	2016-04-10	kkmrkkblmbrbk	F92660632499B9EC	2006860

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2018-01-15	Yaroslav Berezhko	3474CA54BD8E130A	1	2471324	5	3
Verified (Factored)	2018-01-15	Oliver Kruse	3474CA54BD8E130A	1	7173	5	3
Verified	2018-11-08	rucio	3474CA54BD8E130A	2	913335	5	3

P-1 factors

Date	Factor	B1	B2
2018-11-08	1321678496489171035487	2000000	60000000

History

Date	User	Type	Result
2018-11-08	rucio	C-PRP	M2510743/25988683166981566701487/1321678496489171035487 : 3474CA54BD8E130A PRP: Verified PRP without proof (not generated)
2018-11-08	alpertron	F-PM1	Factor: 1321678496489171035487 / (P-1, B1=2000000, B2=60000000, E=12)
2018-01-15	Oliver Kruse	C-PRP	M2510743/25988683166981566701487 : 3474CA54BD8E130A PRP: Verified PRP without proof (not generated)
2018-01-15	Yaroslav Berezhko	C-PRP	M2510743/25988683166981566701487 : 3474CA54BD8E130A PRP: Verified PRP without proof (not generated)
2018-01-12	Sebastian Hornbostel	F-ECM	Factor: 25988683166981566701487 / (ECM curve 3, B1=50000, B2=5000000)
2017-07-31	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-04-10	kkmrkkblmbrbk	C-LL	F92660632499B9EC
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-12-16	David Campeau	NF-PM1	B1=685000, B2=19180000, E=12
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-12	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61