2 014 487 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
1571002040061050108689	22	70.4	2013-10-10 10:27:05

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	115 / 640

Estimated T-Level: 25.9 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Steven Boye	B74594C504847F4F	0
Verified (Factored)	1999-07-12	brian	B74594C504847F4F	1954543

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-05	Oliver Kruse	F39C92524B4E1A37	1	0	1	3
Verified	2017-11-13	kkmrkkblmbrbk	F39C92524B4E1A37	1	29964	1	3

P-1 factors

Date	Factor	B1	B2
2013-10-10	1571002040061050108689	640000	14080000

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-13	kkmrkkblmbrbk	C-PRP	M2014487/1571002040061050108689 : F39C92524B4E1A37 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2014487/1571002040061050108689 : F39C92524B4E1A37 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2013-10-10	David Campeau	F-PM1	Factor: 1571002040061050108689
2013-02-11	dbaugh	NF	no factor from 2^62 to 2^63
2012-02-02	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-02	Joss	NF-PM1	B1=201448
2010-11-12	Joss	NF-PM1	B1=100000
2010-11-11	Joss	NF-PM1	B1=75000
2010-11-11	Joss	NF-PM1	B1=60000
2010-11-08	Joss	NF-PM1	B1=30000
2009-05-12	Rob_Dee	NF-PM1	B1=15000, B2=198750
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61