2 119 919 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
375143201532107207431	21	68.3	2015-08-07 01:29:27

ECM

Digits	B1	Curves
25	50000	103 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Michael Kostashuk	FF2F77B64CD787B3	0
Verified (Factored)	1999-03-15	larry allen	FF2F77B64CD787B3	1554786

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-07	Oliver Kruse	19D03605BE70130E	1	0	1	3
Verified	2017-11-17	kkmrkkblmbrbk	19D03605BE70130E	1	885532	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-17	kkmrkkblmbrbk	C-PRP	M2119919/375143201532107207431 : 19D03605BE70130E PRP: Verified PRP without proof (not generated)
2017-10-07	Oliver Kruse	C-PRP	M2119919/375143201532107207431 : 19D03605BE70130E PRP: Verified PRP without proof (not generated)
2016-03-28	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-08-07	guru	F-ECM	Factor: 375143201532107207431 / (ECM curve 1, B1=50000, B2=5000000)
2015-03-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-06	ramgeis	NF	no factor from 2^62 to 2^63
2012-04-02	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-25	James Heinrich	NF-PM1	B1=140000, B2=3010000, E=6
2011-01-11	Joss	NF-PM1	B1=50000
2010-12-30	Joss	NF-PM1	B1=30000
2009-08-02	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61