2 248 931 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
13582542420556041468199	23	73.5	old
30725266634458165018657	23	74.7	2008-07-15 22:27:14
14589318336128147767041833	26	83.6	2016-05-03 11:13:52

ECM

Digits	B1	Curves
25	50000	88 / 280

Estimated T-Level: 21.6 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		John Borleis III	D5D29CEFCE48F88B	0
Verified (Factored)	1999-03-15	stephen armstrong	D5D29CEFCE48F88B	2187552

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-10	Oliver Kruse	5513E51413FA51E0	1	0	1	3
Verified	2017-10-18	Oliver Kruse	BE15EA38F0F7C92B	3	1373772	5	3
Verified	2017-11-21	kkmrkkblmbrbk	BE15EA38F0F7C92B	3	1670350	5	3

P-1 factors

Date	Factor	B1	B2
2016-05-03	14589318336128147767041833	500000	15000000

History

Date	User	Type	Result
2017-11-21	kkmrkkblmbrbk	C-PRP	M2248931/13582542420556041468199/30725266634458165018657/14589318336128147767041833 : BE15EA38F0F7C92B PRP: Verified PRP without proof (not generated)
2017-10-18	Oliver Kruse	C-PRP	M2248931/13582542420556041468199/30725266634458165018657/14589318336128147767041833 : BE15EA38F0F7C92B PRP: Verified PRP without proof (not generated)
2017-10-10	Oliver Kruse	C-PRP	M2248931/known_factors : 5513E51413FA51E0 PRP: Verified PRP without proof (not generated)
2016-05-03	alpertron	F-PM1	Factor: 14589318336128147767041833 / (P-1, B1=500000, B2=15000000, E=12)
2008-07-15	George Woltman	F-ECM	Factor: 417327237445423182451498659451757460507188743