2 437 531 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
22503060575547432312462817	26	84.2	2017-04-24 20:31:04

ECM

Digits	B1	Curves
25	50000	25 / 280

Estimated T-Level: 20.4 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Stephan Grupp	5AE6DE7C24798555	0
Verified (Factored)	1999-03-15	Ethan O'Connor	5AE6DE7C24798555	536384

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-13	Oliver Kruse	9ECF41500E8A51A2	1	1974612	5	3
Verified	2017-11-27	ATH	9ECF41500E8A51A2	1	893893	5	3

History

Date	User	Type	Result
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-27	ATH	C-PRP	M2437531/22503060575547432312462817 : 9ECF41500E8A51A2 PRP: Verified PRP without proof (not generated)
2017-10-13	Oliver Kruse	C-PRP	M2437531/22503060575547432312462817 : 9ECF41500E8A51A2 PRP: Verified PRP without proof (not generated)
2017-04-24	bam	F-ECM	Factor: 22503060575547432312462817 / (ECM curve 1, B1=50000, B2=5000000)
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-10-25	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-27	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-27	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-05-12	mikr	NF-PM1	B1=1988120, B2=69584180, E=12
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-05	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-10	Oscar Östlin	NF-PM1	B1=95000, B2=1923750, E=6
2010-11-17	Joss	NF-PM1	B1=20000
2009-01-10	Sturle Sunde	NF	no factor from 2^60 to 2^61