631 597 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
3715925606270477861475680906716817	34	111.5	2009-12-30 03:26:13

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	215 / 640

Estimated T-Level: 26.7 ⓘ

TF below 2^84 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	1B70	0
Verified (Factored)		Tom Waskow	FC6D89CBE17E9B70	0
Verified (Factored)		Klaus Kastens	FC6D89CBE17E9B70	515205

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-27	Oliver Kruse	5095EFA00677E2B6	1	0	1	3
Verified	2017-10-13	Oliver Kruse	5095EFA00677E2B6	1	56298	1	3
Verified	2017-12-15	ATH	5095EFA00677E2B6	1	31980	1	3
Unverified (Reliable)	2020-04-19	Oliver Kruse	E521F4473EF8B0__	1	67264	5	3

History

Date	User	Type	Result
2023-01-15	USAFSS	NF-PM1	B1=2000000, B2=6199753560
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2020-04-19	Oliver Kruse	C-PRP	M631597/3715925606270477861475680906716817 : E521F4473EF8B0__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-12-15	ATH	C-PRP	M631597/3715925606270477861475680906716817 : 5095EFA00677E2B6 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-13	Oliver Kruse	C-PRP	M631597/3715925606270477861475680906716817 : 5095EFA00677E2B6 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-27	Oliver Kruse	C-PRP	M631597/3715925606270477861475680906716817 : 5095EFA00677E2B6 PRP: Unverified (Reliable) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=1000000, B2=30000000, E=12
2009-12-30	Sturle Sunde	F-ECM	Factor: 3715925606270477861475680906716817
2008-10-12	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-10-12	Sturle Sunde	NF	no factor from 2^58 to 2^59