2 271 257 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
13099370269679	14	43.6	old
3402447184452846487	19	61.6	2016-04-28 11:25:49

P-1 factors

Date	Factors	B1	B2
2016-04-28	3402447184452846487	500000	15000000

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	304 / 640

Estimated T-Level: 27.4 ⓘ

TF below 2^86 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	0006E59F7E717C58	2	0	1	3
Verified	PRP without proof (not generated)	2017-11-21	storm5510	0006E59F7E717C58	2	660628	1	3

History

Date	User	Type	Result
2017-11-21	storm5510	C-PRP	M2271257/13099370269679/3402447184452846487 : 0006E59F7E717C58
2017-10-11	Oliver Kruse	C-PRP	M2271257/13099370269679/3402447184452846487 : 0006E59F7E717C58
2016-04-28	alpertron	F-PM1	Factor: 3402447184452846487 / B1=500000, B2=15000000

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