1 268 789 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
404458201343333557083793	24	78.4	2018-01-05 12:42:20

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	14EE	0
Verified (Factored)		chris lueders	96F1178B542F94EE	0
Verified (Factored)	2002-08-31	Mark Outhier	96F1178B542F94EE	911968
Verified (Factored)	2016-06-01	MadPoo	96F1178B542F94EE	387954

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-01-06	vasya_nyasha	9FAF2BBE67E73856	1	89466	5	3
Verified	2018-01-08	Oliver Kruse	9FAF2BBE67E73856	1	371792	5	3

History

Date	User	Type	Result
2018-01-08	Oliver Kruse	C-PRP	M1268789/404458201343333557083793 : 9FAF2BBE67E73856 PRP: Verified PRP without proof (not generated)
2018-01-06	vasya_nyasha	C-PRP	M1268789/404458201343333557083793 : 9FAF2BBE67E73856 PRP: Verified PRP without proof (not generated)
2018-01-05	TJAOI	F-ECM	Factor: 404458201343333557083793 / (ECM curve 76, B1=50000, B2=5000000)
2016-06-01	MadPoo	C-LL	96F1178B542F94EE
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-09-24	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-10	monst	NF	no factor from 2^64 to 2^65
2015-04-09	omylist	NF	no factor from 2^63 to 2^64
2015-02-16	mikr	NF-PM1	B1=4178000, B2=167123000, E=12
2014-09-30	Joss	NF-PM1	B1=250587
2012-10-13	dbaugh	NF	no factor from 2^62 to 2^63
2012-09-14	Axelsson	NF	no factor from 2^61 to 2^62
2009-02-16	Sturle Sunde	NF	no factor from 2^60 to 2^61