2 275 747 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 3 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶²

Factored

Factor	Digits	Bits	Date
54617929	8	25.7	old
969468223	9	29.9	2008-07-14 20:22:38
105670600179035729303	21	66.5	2016-04-05 16:59:16

P-1 factors

Date	Factors	B1	B2
2016-04-05	105670600179035729303	500000	15000000

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	124 / 640

Estimated T-Level: 26.0 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Factored	PRP without proof (not generated)	2017-10-11	Oliver Kruse	FAD7E7693F000024	1	0	1	3
Verified	PRP without proof (not generated)	2017-10-18	Oliver Kruse	6CF063AC13B44DD0	3	1422211	5	3
Verified	PRP without proof (not generated)	2017-11-21	storm5510	6CF063AC13B44DD0	3	482148	5	3

History

Date	User	Type	Result
2017-11-21	storm5510	C-PRP	M2275747/54617929/969468223/105670600179035729303 : 6CF063AC13B44DD0
2017-10-18	Oliver Kruse	C-PRP	M2275747/54617929/969468223/105670600179035729303 : 6CF063AC13B44DD0
2017-10-11	Oliver Kruse	C-PRP	M2275747/known_factors : FAD7E7693F000024
2016-04-05	alpertron	F-PM1	Factor: 105670600179035729303 / B1=500000, B2=15000000
2008-07-14	George Woltman	F-ECM	Factor: 969468223