2 495 657 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
1257811129	10	30.2	old
182819228752151	15	47.4	2008-09-07 10:06:19
3507228787459517764393	22	71.6	2018-03-06 14:48:31

ECM

Digits	B1	Curves
25	50000	209 / 280

Estimated T-Level: 23.7 ⓘ

TF below 2^74 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-14	Oliver Kruse	F9991BF783124EFB	2	1069963	5	3
Verified (Factored)	2017-11-30	ATH	F9991BF783124EFB	2	205301	5	3
Verified	2018-03-06	ATH	F9991BF783124EFB	3	1563807	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2018-03-06	ATH	C-PRP	M2495657/1257811129/182819228752151/3507228787459517764393 : F9991BF783124EFB PRP: Verified PRP without proof (not generated)
2018-03-06	alpertron	F-ECM	Factor: 3507228787459517764393 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-30	ATH	C-PRP	M2495657/1257811129/182819228752151 : F9991BF783124EFB PRP: Verified PRP without proof (not generated)
2017-10-14	Oliver Kruse	C-PRP	M2495657/1257811129/182819228752151 : F9991BF783124EFB PRP: Verified PRP without proof (not generated)
2008-09-07	Will Edgington	F	Factor: 182819228752151