1 338 791 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
2677583	7	21.4	old
288570045826604161	18	58.0	2015-01-16 12:21:23

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 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	2017-09-30	Oliver Kruse	A835A7A54BCD4A96	2	0	1	3
Verified	2017-10-23	kkmrkkblmbrbk	A835A7A54BCD4A96	2	252852	1	3

P-1 factors

Date	Factor	B1	B2
2015-01-16	288570045826604161	500000	15000000

History

Date	User	Type	Result
2017-10-23	kkmrkkblmbrbk	C-PRP	M1338791/2677583/288570045826604161 : A835A7A54BCD4A96 PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1338791/2677583/288570045826604161 : A835A7A54BCD4A96 PRP: Verified PRP without proof (not generated)
2015-01-16	alpertron	F-PM1	Factor: 288570045826604161 / (P-1, B1=500000, B2=15000000, E=12)