371 831 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
13329948666721859248166334359	29	93.4	2019-04-08 05:43:49

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	329 / 640

Estimated T-Level: 27.6 ⓘ

TF below 2^87 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	006	0
Verified (Factored)		Jim Kraemer	57BD156962D04006	0
Verified (Factored)		Eivind Triel	57BD156962D04006	46551
Verified (Factored)	2002-01-02	Dennis Pope	57BD156962D04006	201

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-04-09	trebor	4131A285A377E5E9	1	102171	5	3
Verified	2019-04-09	matzetoni	4131A285A377E5E9	1	98861	5	3
Verified	2019-04-10	marssystems	4131A285A377E5E9	1	316811	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-04-10	marssystems	C-PRP	M371831/13329948666721859248166334359 : 4131A285A377E5E9 PRP: Verified PRP without proof (small exponent)
2019-04-09	matzetoni	C-PRP	M371831/13329948666721859248166334359 : 4131A285A377E5E9 PRP: Verified PRP without proof (small exponent)
2019-04-09	trebor	C-PRP	M371831/13329948666721859248166334359 : 4131A285A377E5E9 PRP: Verified PRP without proof (small exponent)
2019-04-08	alex	F-ECM	Factor: 13329948666721859248166334359 / (ECM curve 79, B1=250000, B2=25000000, Sigma=3096911914864022)
2018-02-22	Gordon Spence	NF	no factor from 2^64 to 2^65
2018-02-09	BloodERazor	NF	no factor from 2^64 to 2^65
2016-12-11	mikr	NF-PM1	B1=60000000, B2=3000000000, E=12
2015-11-21	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-11-21	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-13	NR	NF	no factor from 2^61 to 2^62
2013-01-16	Sid & Andy	NF	no factor from 2^60 to 2^61
2012-08-06	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2012-05-29	Joss	NF-PM1	B1=3594522
2012-03-05	Joss	NF-PM1	B1=1497717
2011-08-20	Joss	NF-PM1	B1=1198174
2009-01-25	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-06	Sturle Sunde	NF	no factor from 2^58 to 2^59