538 739 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
630324631	9	29.2	old
1599513108171321047	19	60.5	2014-10-28 11:45:38

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-27	Oliver Kruse	E290D6C96F783AC6	2	0	1	3
Verified	2017-09-28	Oliver Kruse	E290D6C96F783AC6	2	0	1	3
Verified	2017-11-07	kkmrkkblmbrbk	E290D6C96F783AC6	2	97241	1	3
Unverified (Reliable)	2020-04-19	Oliver Kruse	E85AD9D3C60E96__	2	348849	5	3

P-1 factors

Date	Factor	B1	B2
2014-10-28	1599513108171321047	1500000	50000000

History

Date	User	Type	Result
2021-08-07	ViliamF	NF-PM1	B1=10000000, B2=1110000000
2020-04-19	Oliver Kruse	C-PRP	M538739/630324631/1599513108171321047 : E85AD9D3C60E96__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-07	kkmrkkblmbrbk	C-PRP	M538739/630324631/1599513108171321047 : E290D6C96F783AC6 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-28	Oliver Kruse	C-PRP	M538739/630324631/1599513108171321047 : E290D6C96F783AC6 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-27	Oliver Kruse	C-PRP	M538739/630324631/1599513108171321047 : E290D6C96F783AC6 PRP: Unverified (Reliable) PRP without proof (not generated)
2014-10-28	alpertron	F-PM1	Factor: 1599513108171321047 / (P-1, B1=1500000, B2=50000000, E=12)