2 536 771 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 2⁶³

Factored

Factor	Digits	Bits	Date
5175012841	10	32.3	old
173540214126633449	18	57.3	2015-06-05 11:48:20

ECM

Digits	B1	Curves
25	50000	91 / 280

Estimated T-Level: 21.6 ⓘ

TF below 2^67 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	1EAE5AA73834C5A8	2	1944778	5	3
Verified	PRP without proof (not generated)	2017-12-01	storm5510	1EAE5AA73834C5A8	2	2249661	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-01	storm5510	C-PRP	M2536771/5175012841/173540214126633449 : 1EAE5AA73834C5A8
2017-10-14	Oliver Kruse	C-PRP	M2536771/5175012841/173540214126633449 : 1EAE5AA73834C5A8
2015-06-05	TJAOI	F	Factor: 173540214126633449

Username
Password