2 273 351 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶²

Factored

Factor	Digits	Bits	Date
2405205359	10	31.2	old
5858042236406771911	19	62.3	2016-04-30 12:59:31

P-1 factors

Date	Factors	B1	B2
2016-04-30	5858042236406771911	500000	15000000

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	127 / 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
Verified	PRP without proof (not generated)	2017-10-11	Oliver Kruse	6751D4887F6C2E3C	2	0	1	3
Verified	PRP without proof (not generated)	2017-11-21	storm5510	6751D4887F6C2E3C	2	1060192	1	3

History

Date	User	Type	Result
2017-11-21	storm5510	C-PRP	M2273351/2405205359/5858042236406771911 : 6751D4887F6C2E3C
2017-10-11	Oliver Kruse	C-PRP	M2273351/2405205359/5858042236406771911 : 6751D4887F6C2E3C
2016-04-30	alpertron	F-PM1	Factor: 5858042236406771911 / B1=500000, B2=15000000

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