2 543 239 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
1731435997261319	16	50.6	old

ECM

Digits	B1	Curves
25	50000	119 / 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	7F4B0DA08964D2F6	1	1690241	5	3
Verified	PRP without proof (not generated)	2017-12-01	storm5510	7F4B0DA08964D2F6	1	1342369	5	3

History

Date	User	Type	Result
2022-08-24	USAFSS	NF-PM1	B1=300000, B2=259451010
2017-12-01	storm5510	C-PRP	M2543239/1731435997261319 : 7F4B0DA08964D2F6
2017-10-14	Oliver Kruse	C-PRP	M2543239/1731435997261319 : 7F4B0DA08964D2F6

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