2 277 389 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
19126569374217667930033	23	74.0	2016-07-27 07:35:17

ECM

Digits	B1	Curves
25	50000	78 / 280

Estimated T-Level: 21.4 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		John Durbetaki	1E154A445AE747E7	0
Verified (Factored)	1999-03-15	Tim Quill	1E154A445AE747E7	821080

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-11	Oliver Kruse	E964C0F107883754	1	0	1	3
Verified	2017-11-21	ATH	E964C0F107883754	1	1838200	1	3

History

Date	User	Type	Result
2023-05-13	This -Anonymous-	NF-PM1	B1=800000, B2=40000000, E=12
2017-11-21	ATH	C-PRP	M2277389/19126569374217667930033 : E964C0F107883754 PRP: Verified PRP without proof (not generated)
2017-10-11	Oliver Kruse	C-PRP	M2277389/19126569374217667930033 : E964C0F107883754 PRP: Verified PRP without proof (not generated)
2016-07-27	bam	F-ECM	Factor: 19126569374217667930033 / (ECM curve 2, B1=50000, B2=5000000)
2016-04-15	Joss	NF-PM1	B1=391910, B2=14198195, E=12
2016-04-07	Joss	NF-PM1	B1=391910, B2=7054380, E=12
2016-04-02	Joss	NF-PM1	B1=326592
2016-03-20	Joss	NF-PM1	B1=272160
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-11-01	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-10	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-10	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-15	-Anonymous-	NF-PM1	B1=133183
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-05-06	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-01	markr	NF-PM1	B1=105000, B2=2152500, E=6
2010-11-14	Joss	NF-PM1	B1=30000
2010-11-06	Joss	NF-PM1	B1=15000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61