2 621 617 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
30342595159	11	34.8	old
99008296972807	14	46.5	2008-09-30 14:37:19
15173135264354959	17	53.8	2014-10-10 11:12:57

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	61 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 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)	2017-10-15	Yaroslav Berezhko	177F2EB810F35E37	3	0	1	3
Verified	PRP without proof (not generated)	2017-10-17	Oliver Kruse	FFCCA37545AB073E	3	906676	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	177F2EB810F35E37	3	1727871	1	3
Verified	PRP without proof (not generated)	2017-12-06	kkmrkkblmbrbk	FFCCA37545AB073E	3	787374	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-06	kkmrkkblmbrbk	C-PRP	M2621617/30342595159/99008296972807/15173135264354959 : FFCCA37545AB073E
2017-12-02	storm5510	C-PRP	M2621617/30342595159/99008296972807/15173135264354959 : 177F2EB810F35E37
2017-10-17	Oliver Kruse	C-PRP	M2621617/30342595159/99008296972807/15173135264354959 : FFCCA37545AB073E
2017-10-15	Yaroslav Berezhko	C-PRP	M2621617/30342595159/99008296972807/15173135264354959 : 177F2EB810F35E37
2014-10-10	TJAOI	F	Factor: 15173135264354959
2008-09-30	markr	F	Factor: 99008296972807