437 539 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
37312551763892324727405289	26	84.9	2019-05-14 17:30:13

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	78B4	0
Verified (Factored)		Michael J. Kilfoyle	23B7E745BD3FF8B4	0
Verified (Factored)		Eivind Triel	23B7E745BD3FF8B4	307608
Verified (Factored)	2002-01-22	Dennis Pope	23B7E745BD3FF8B4	61387

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-05-15	Niels_Mache_Nextcloud	B4E46EB2BA0E0995	1	91388	5	3
Verified	2019-05-15	francijezek	B4E46EB2BA0E0995	1	282300	5	3
Verified	2019-05-15	francijezek	B4E46EB2BA0E0995	1	262798	5	3
Verified	2019-05-17	arnaud	B4E46EB2BA0E0995	1	120252	5	3

History

Date	User	Type	Result
2019-05-17	arnaud	C-PRP	M437539/37312551763892324727405289 : B4E46EB2BA0E0995 PRP: Verified PRP without proof (small exponent)
2019-05-15	francijezek	C-PRP	M437539/37312551763892324727405289 : B4E46EB2BA0E0995 PRP: Verified PRP without proof (small exponent)
2019-05-15	francijezek	C-PRP	M437539/37312551763892324727405289 : B4E46EB2BA0E0995 PRP: Verified PRP without proof (small exponent)
2019-05-15	Niels_Mache_Nextcloud	C-PRP	M437539/37312551763892324727405289 : B4E46EB2BA0E0995 PRP: Verified PRP without proof (small exponent)
2019-05-14	alex	F-ECM	Factor: 37312551763892324727405289 / (ECM curve 46, B1=250000, B2=25000000, Sigma=544422192747298)
2018-12-19	Gordon Spence	NF	no factor from 2^65 to 2^66
2017-12-21	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-18	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-11-18	Gordon Spence	NF	no factor from 2^62 to 2^63
2012-12-01	dbaugh	NF	no factor from 2^61 to 2^62
2012-11-27	dbaugh	NF	no factor from 2^60 to 2^61
2012-11-13	markr	NF-PM1	B1=20000000, B2=1000000000, E=12
2010-08-24	Rob_Dee	NF-PM1	B1=1000000, B2=2000000, E=6
2010-08-23	Rob_Dee	NF-PM1	B1=500000, B2=1000000
2009-08-27	Carsten Kossendey	NF-PM1	B1=437539