1 756 919 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
6240576289	10	32.5	old
170105744414959	15	47.3	2008-08-26 20:19:58
420282713414566177132193	24	78.5	2020-07-17 18:54:22

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	Oliver Kruse	36290251C8EE137D	2	0	1	3
Verified (Factored)	2017-11-03	kkmrkkblmbrbk	36290251C8EE137D	2	1337152	1	3
Verified	2020-07-18	xyuzyz	2C9278EAB4A5B891	3	1204679	5	3
Verified	2020-07-21	daveward2005	2C9278EAB4A5B891	3	170561	5	3

History

Date	User	Type	Result
2020-07-21	daveward2005	C-PRP	M1756919/6240576289/170105744414959/420282713414566177132193 : 2C9278EAB4A5B891 PRP: Verified PRP without proof (not generated)
2020-07-18	xyuzyz	C-PRP	M1756919/6240576289/170105744414959/420282713414566177132193 : 2C9278EAB4A5B891 PRP: Verified PRP without proof (not generated)
2020-07-17	_p95holder_	F-ECM	Factor: 420282713414566177132193 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-03	kkmrkkblmbrbk	C-PRP	M1756919/6240576289/170105744414959 : 36290251C8EE137D PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1756919/6240576289/170105744414959 : 36290251C8EE137D PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-08-26	-Anonymous-	F	Factor: 170105744414959