237 959 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
8069793616575708974657372316228989319881	40	132.6	2019-04-06 06:31:28

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	478 / 640

Estimated T-Level: 28.7 ⓘ

TF below 2^90 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	4302	0
Verified (Factored)		Unknown	4302	0
Verified (Factored)		Brian J. Beesley	49D8B1E6F5D7C302	0
Verified (Factored)		Eivind Triel	49D8B1E6F5D7C302	96538
Verified (Factored)	2001-09-16	Brian J. Beesley	49D8B1E6F5D7C302	198462

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-04-07	artorollo	5066EE66DEA3BC5F	1	25579	5	3
Verified	2019-04-07	matzetoni	5066EE66DEA3BC5F	1	74611	5	3
Verified	2019-04-11	Chang Chia-Tche	5066EE66DEA3BC5F	1	99607	5	3

P-1 factors

Date	Factor	B1	B2
2019-04-06	8069793616575708974657372316228989319881	100000000	2000000000

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-04-11	Chang Chia-Tche	C-PRP	M237959/8069793616575708974657372316228989319881 : 5066EE66DEA3BC5F PRP: Verified PRP without proof (small exponent)
2019-04-07	matzetoni	C-PRP	M237959/8069793616575708974657372316228989319881 : 5066EE66DEA3BC5F PRP: Verified PRP without proof (small exponent)
2019-04-07	artorollo	C-PRP	M237959/8069793616575708974657372316228989319881 : 5066EE66DEA3BC5F PRP: Verified PRP without proof (small exponent)
2019-04-06	alex	F-PM1	Factor: 8069793616575708974657372316228989319881 / (P-1, 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=2661, B2=66525
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
2015-07-24	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=2695000, B2=78155000, E=12
2013-07-20	lycorn	NF	no factor from 2^60 to 2^61
2012-02-26	Joss	NF-PM1	B1=2671574
2011-07-24	Joss	NF-PM1	B1=2137259
2011-01-31	Joss	NF-PM1	B1=2000000
2009-02-06	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