4 429 589 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷¹

TF target 2⁶⁵

P-1

B1 =	10000000
B2 =	500000000

ECM

Digits	B1	Curves
25	50000	64 / 280

Estimated T-Level: 21.1 ⓘ

Status	Date	User	Residue	Shift
Verified	1998-08-30	Evan Tsang	2336D83D6EDFAD59	0
Verified	1999-12-15	Bruce A Metcalf	2336D83D6EDFAD59	1522817

History

Date	User	Type	Result
2021-08-20	axn	NF-PM1	B1=10000000, B2=500000000
2021-08-09	SRBase	NF	no factor from 2^70 to 2^71
2021-07-16	axn	NF	no factor from 2^69 to 2^70
2021-06-07	TJAOI	NF	no factor from 2^68 to 2^69
2021-04-24	Architects Cubed	NF-PM1	B1=222000, B2=13497000
2018-06-26	ramgeis	NF	no factor from 2^67 to 2^68
2018-05-17	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-06-22	snme2pm1	NF	no factor from 2^65 to 2^66
2014-09-13	monst	NF	no factor from 2^64 to 2^65
2014-08-30	Jayder	NF	no factor from 2^63 to 2^64
2012-10-06	Squeeky_Squirrel	NF-PM1	B1=290000, B2=7395000, E=12
2012-01-15	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-10-21	markr	NF	no factor from 2^61 to 2^62
2009-07-20	Carsten Kossendey	NF-PM1	B1=25000, B2=356250