259 421 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
1455051606146299223	19	60.3	2007-08-17 17:45:34

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	526 / 640

Estimated T-Level: 29.1 ⓘ

TF below 2^92 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-22	Oliver Kruse	D91BBA79926ECE1E	1	0	1	3
Verified	2017-10-12	Oliver Kruse	D91BBA79926ECE1E	1	96092	1	3
Verified	2017-11-06	kkmrkkblmbrbk	D91BBA79926ECE1E	1	92356	1	3
Unverified (Reliable)	2020-04-17	Oliver Kruse	FF33E26FF9DB58__	1	155868	5	3

History

Date	User	Type	Result
2022-05-01	Oliver Kruse	NF-PM1	B1=30000000, B2=10035812696910
2021-09-06	Oliver Kruse	NF-PM1	B1=30000000, B2=3000000000, E=24
2020-04-17	Oliver Kruse	C-PRP	M259421/1455051606146299223 : FF33E26FF9DB58__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-06	kkmrkkblmbrbk	C-PRP	M259421/1455051606146299223 : D91BBA79926ECE1E PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-12	Oliver Kruse	C-PRP	M259421/1455051606146299223 : D91BBA79926ECE1E PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M259421/1455051606146299223 : D91BBA79926ECE1E PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M259421/1455051606146299223 : D91BBA79926ECE1E PRP without proof (not generated)
2007-08-17	Team_Bundu	F-ECM	Factor: 1455051606146299223