1 672 637 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
13381097	8	23.7	old
718146695951	12	39.4	2008-07-15 07:45:08
11071050492041	14	43.3	2008-09-30 13:30:08
6292358170451872327	19	62.4	2015-04-30 11:21:38
254181561033970325423	21	67.8	2018-02-03 19:20:14

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	kkmrkkblmbrbk	E495F7EC79D131C3	4	0	1	3
Verified (Factored)	2017-11-14	ATH	E495F7EC79D131C3	4	1644353	1	3
Verified	2018-02-04	_p95holder_	240CB25E4BE980FF	5	923990	5	3
Verified	2018-02-05	AdolfNor	240CB25E4BE980FF	5	965400	5	3
Verified	2018-02-05	_p95holder_	240CB25E4BE980FF	5	643111	5	3
Verified	2018-02-15	trebor	240CB25E4BE980FF	5	343923	5	3

P-1 factors

Date	Factor	B1	B2
2015-04-30	6292358170451872327	500000	15000000

History

Date	User	Type	Result
2018-02-15	trebor	C-PRP	M1672637/13381097/718146695951/11071050492041/6292358170451872327/254181561033970325423 : 240CB25E4BE980FF PRP: Verified PRP without proof (not generated)
2018-02-05	_p95holder_	C-PRP	M1672637/13381097/718146695951/11071050492041/6292358170451872327/254181561033970325423 : 240CB25E4BE980FF PRP: Verified PRP without proof (not generated)
2018-02-05	AdolfNor	C-PRP	M1672637/13381097/718146695951/11071050492041/6292358170451872327/254181561033970325423 : 240CB25E4BE980FF PRP: Verified PRP without proof (not generated)
2018-02-04	_p95holder_	C-PRP	M1672637/13381097/718146695951/11071050492041/6292358170451872327/254181561033970325423 : 240CB25E4BE980FF PRP: Verified PRP without proof (not generated)
2018-02-03	Chang Chia-Tche	F-ECM	Factor: 254181561033970325423 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-14	ATH	C-PRP	M1672637/13381097/718146695951/11071050492041/6292358170451872327 : E495F7EC79D131C3 PRP: Verified PRP without proof (not generated)
2017-10-03	kkmrkkblmbrbk	C-PRP	M1672637/13381097/718146695951/11071050492041/6292358170451872327 : E495F7EC79D131C3 PRP: Verified PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1672637/13381097/718146695951/11071050492041/6292358170451872327 : E495F7EC79D131C3 PRP without proof (not generated)
2015-04-30	alpertron	F-PM1	Factor: 6292358170451872327 / (P-1, B1=500000, B2=15000000, E=12)
2008-09-30	markr	F	Factor: 11071050492041
2008-07-15	J Feitsma	F	Factor: 718146695951