1 139 503 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
106378695082775706436687	24	76.5	2016-04-20 13:39:34

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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)		Joel Smith	64941364F511B528	0
Verified (Factored)		Simon Burge	64941364F511B528	0
Verified (Factored)	2004-07-26	Brian J. Beesley	64941364F511B528	284760

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	976B722EB55320A2	1	0	1	3
Verified	2017-10-17	Oliver Kruse	976B722EB55320A2	1	314227	1	3
Verified	2018-01-05	ATH	976B722EB55320A2	1	303070	1	3

History

Date	User	Type	Result
2018-01-05	ATH	C-PRP	M1139503/106378695082775706436687 : 976B722EB55320A2 PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M1139503/106378695082775706436687 : 976B722EB55320A2 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1139503/106378695082775706436687 : 976B722EB55320A2 PRP: Verified PRP without proof (not generated)
2016-04-20	bam	F-ECM	Factor: 106378695082775706436687 / (ECM curve 2, B1=50000, B2=5000000)
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-07-10	omylist	NF	no factor from 2^65 to 2^66
2015-01-14	lycorn	NF	no factor from 2^64 to 2^65
2014-12-26	Matthias Wurtinger	NF	no factor from 2^63 to 2^64
2013-10-01	David Campeau	NF-PM1	B1=1220000, B2=35380000, E=12
2012-10-21	dbaugh	NF	no factor from 2^62 to 2^63
2012-08-17	Axelsson	NF	no factor from 2^61 to 2^62
2009-02-15	Sturle Sunde	NF	no factor from 2^60 to 2^61