2 509 499 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 2⁶³

Factored

Factor	Digits	Bits	Date
5018999	7	22.3	old
318550784063	12	38.2	2008-07-14 20:24:29
255459730690897	15	47.9	2008-09-07 10:06:26

ECM

Digits	B1	Curves
25	50000	117 / 280

Estimated T-Level: 22.1 ⓘ

TF below 2^68 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)	2017-10-14	Oliver Kruse	B9ACF2C27DBFFB30	3	1097197	5	3
Verified	PRP without proof (not generated)	2017-11-30	storm5510	B9ACF2C27DBFFB30	3	708681	5	3

History

Date	User	Type	Result
2022-08-20	USAFSS	NF-PM1	B1=240000, B2=199861200
2017-11-30	storm5510	C-PRP	M2509499/5018999/318550784063/255459730690897 : B9ACF2C27DBFFB30
2017-10-14	Oliver Kruse	C-PRP	M2509499/5018999/318550784063/255459730690897 : B9ACF2C27DBFFB30
2008-09-07	Will Edgington	F	Factor: 255459730690897
2008-07-14	George Woltman	F-ECM	Factor: 318550784063

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