787 999 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
121351847	9	26.9	old
5025857623	10	32.2	2008-07-16 09:26:41
12517905541289645929	20	63.4	2014-10-04 13:36:51

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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	2017-10-05	Oliver Kruse	0B478423581C5267	3	0	1	3
Verified	2017-10-13	Oliver Kruse	0B478423581C5267	3	73530	1	3
Verified	2017-12-16	ATH	0B478423581C5267	3	97789	1	3
Unverified (Reliable)	2020-04-21	Oliver Kruse	1DD8C57008796D__	3	585249	5	3

P-1 factors

Date	Factor	B1	B2
2014-10-04	12517905541289645929	500000	15000000

History

Date	User	Type	Result
2020-04-21	Oliver Kruse	C-PRP	M787999/121351847/5025857623/12517905541289645929 : 1DD8C57008796D__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-12-16	ATH	C-PRP	M787999/121351847/5025857623/12517905541289645929 : 0B478423581C5267 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-13	Oliver Kruse	C-PRP	M787999/121351847/5025857623/12517905541289645929 : 0B478423581C5267 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-05	Oliver Kruse	C-PRP	M787999/121351847/5025857623/12517905541289645929 : 0B478423581C5267 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-28	Oliver Kruse	C-PRP	M787999/121351847/5025857623/12517905541289645929 : 0B478423581C5267 PRP without proof (not generated)
2014-10-04	alpertron	F-PM1	Factor: 12517905541289645929 / (P-1, B1=500000, B2=15000000, E=12)
2008-07-16	J Feitsma	F	Factor: 5025857623