363 397 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
1583101539776826246590482909409	31	100.3	2019-04-04 11:55:28

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	337 / 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	1B00	0
Verified (Factored)		Klaus Kastens	0BF2E562CB6DDB00	0
Verified (Factored)		Warut Roonguthai	0BF2E562CB6DDB00	0
Verified (Factored)		Eivind Triel	0BF2E562CB6DDB00	112121
Verified (Factored)	2016-06-01	MadPoo	0BF2E562CB6DDB00	202784

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-04-05	matzetoni	C7F784EDE16EF0AD	1	54947	5	3
Verified	2019-04-05	EthanD	C7F784EDE16EF0AD	1	59665	5	3

History

Date	User	Type	Result
2019-04-05	EthanD	C-PRP	M363397/1583101539776826246590482909409 : C7F784EDE16EF0AD PRP: Verified PRP without proof (small exponent)
2019-04-05	matzetoni	C-PRP	M363397/1583101539776826246590482909409 : C7F784EDE16EF0AD PRP: Verified PRP without proof (small exponent)
2019-04-04	alex	F-ECM	Factor: 1583101539776826246590482909409 / (ECM curve 87, B1=250000, B2=25000000, Sigma=8495222515314642)
2018-02-22	Gordon Spence	NF	no factor from 2^64 to 2^65
2018-02-13	BloodERazor	NF	no factor from 2^64 to 2^65
2016-11-29	mikr	NF-PM1	B1=60000000, B2=3000000000, E=12
2016-06-01	MadPoo	C-LL	0BF2E562CB6DDB00
2015-12-22	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-12-22	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-13	NR	NF	no factor from 2^61 to 2^62
2013-05-05	lycorn	NF	no factor from 2^60 to 2^61
2012-03-14	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2012-03-05	Joss	NF-PM1	B1=1542941
2011-08-14	Joss	NF-PM1	B1=1234353
2009-01-26	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-12-29	Sturle Sunde	NF	no factor from 2^58 to 2^59