237 379 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
618652914245963267836186030553	30	99.0	2019-05-06 01:35:27

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	572 / 640

Estimated T-Level: 29.5 ⓘ

TF below 2^93 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	6341	0
Verified (Factored)		Unknown	6341	0
Verified (Factored)		Brian J. Beesley	B61347E41C316341	0
Verified (Factored)		Eivind Triel	B61347E41C316341	113971
Verified (Factored)	2001-09-16	Brian J. Beesley	B61347E41C316341	46895

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-05-06	Niels_Mache_Nextcloud	4763256C2DED4AD7	1	123199	5	3
Verified	2019-05-07	kkmrkkblmbrbk	4763256C2DED4AD7	1	218674	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-05-07	kkmrkkblmbrbk	C-PRP	M237379/618652914245963267836186030553 : 4763256C2DED4AD7 PRP: Verified PRP without proof (small exponent)
2019-05-06	Niels_Mache_Nextcloud	C-PRP	M237379/618652914245963267836186030553 : 4763256C2DED4AD7 PRP: Verified PRP without proof (small exponent)
2019-05-06	lycorn	F-ECM	Factor: 618652914245963267836186030553 / (ECM curve 165, B1=250000, B2=25000000)
2019-04-07	alex	NF-PM1	B1=100000000, B2=2000000000, E=12
2018-03-09	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-05-13	Numberwang	NF-PM1	B1=2654, B2=66350
2016-02-23	Mark Rose	NF	no factor from 2^57 to 2^58
2016-01-12	Gordon Spence	NF	no factor from 2^63 to 2^64
2016-01-12	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-22	snme2pm1	NF	no factor from 2^61 to 2^62
2014-12-15	Denial140	NF-PM1	B1=10000000, B2=250000000, E=12
2013-10-11	David Campeau	NF-PM1	B1=2700000, B2=78300000, E=12
2013-07-20	lycorn	NF	no factor from 2^60 to 2^61
2012-02-26	Joss	NF-PM1	B1=2680041
2011-07-24	Joss	NF-PM1	B1=2144033
2011-01-31	Joss	NF-PM1	B1=2000000
2009-01-25	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-01	Sturle Sunde	NF	no factor from 2^58 to 2^59