511 867 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
50416551688919081	17	55.5	old
13283598229526186699904817103	29	93.4	2018-07-27 12:39:04

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-27	Oliver Kruse	BA94F1F46C839DA4	1	0	1	3
Verified (Factored)	2017-09-28	Oliver Kruse	BA94F1F46C839DA4	1	0	1	3
Verified (Factored)	2017-11-07	kkmrkkblmbrbk	BA94F1F46C839DA4	1	323505	1	3
Verified	2018-07-28	ANONYMOUS	305E9C8AE54CFD28	2	1709	5	3
Verified	2018-07-30	_p95holder_	305E9C8AE54CFD28	2	124618	5	3

History

Date	User	Type	Result
2022-12-16	USAFSS	NF-PM1	B1=2000000, B2=6733146420
2018-07-30	_p95holder_	C-PRP	M511867/50416551688919081/13283598229526186699904817103 : 305E9C8AE54CFD28 PRP: Verified PRP without proof (small exponent)
2018-07-28	ANONYMOUS	C-PRP	M511867/50416551688919081/13283598229526186699904817103 : 305E9C8AE54CFD28 PRP: Verified PRP without proof (small exponent)
2018-07-27	TJAOI	F-ECM	Factor: 13283598229526186699904817103 / (ECM curve 41, B1=250000, B2=25000000)
2017-11-07	kkmrkkblmbrbk	C-PRP	M511867/50416551688919081 : BA94F1F46C839DA4 PRP: Verified PRP without proof (small exponent)
2017-09-28	Oliver Kruse	C-PRP	M511867/50416551688919081 : BA94F1F46C839DA4 PRP: Verified PRP without proof (not generated)
2017-09-27	Oliver Kruse	C-PRP	M511867/50416551688919081 : BA94F1F46C839DA4 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=1500000, B2=50000000, E=12