10 663 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 2⁴⁴

Factored

Factor	Digits	Bits	Date
170609	6	17.4	old
186790115032128288354393552607	30	97.2	2008-10-16 23:57:25
91986863600990794189571432555555473	35	116.1	2010-05-13 18:12:11

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	3296 / 16550

Estimated T-Level: 46.0 ⓘ

TF below 2^148 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	No proof (small exponent)	2017-09-21	Oliver Kruse	3FC91B0B0C7497C2	3	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	3FC91B0B0C7497C2	3	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	3FC91B0B0C7497C2	3	5329	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	65ABB05356029C69	3	7611	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	65ABB05356029C69	3	4942	5	3

History

Date	User	Type	Result
2025-02-24	masser	NF-PP1	Start=98/71, B1=640000000, B2=639360000000
2025-02-17	masser	NF-PP1	Start=6/5, B1=640000000, B2=639360000000
2025-01-28	masser	NF-PP1	Start=2/7, B1=640000000, B2=639360000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M10663/170609/186790115032128288354393552607/91986863600990794189571432555555473 : 65ABB05356029C69
2022-11-09	-anonymous-	NF-PM1	B1=100000000000, B2=120443211520241610
2020-04-17	Oliver Kruse	C-PRP	M10663/170609/186790115032128288354393552607/91986863600990794189571432555555473 : 65ABB05356029C69
2017-10-12	kkmrkkblmbrbk	C-PRP	M10663/170609/186790115032128288354393552607/91986863600990794189571432555555473 : 3FC91B0B0C7497C2
2017-10-02	kkmrkkblmbrbk	C-PRP	M10663/170609/186790115032128288354393552607/91986863600990794189571432555555473 : 3FC91B0B0C7497C2
2017-09-21	Oliver Kruse	C-PRP	M10663/170609/186790115032128288354393552607/91986863600990794189571432555555473 : 3FC91B0B0C7497C2
2017-09-21	Oliver Kruse	C-PRP	M10663/170609/186790115032128288354393552607/91986863600990794189571432555555473 : 3FC91B0B0C7497C2
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=10000000000, E=12
2010-05-13	James Hintz	F-ECM	Factor: 91986863600990794189571432555555473
2008-10-16	-anonymous-	F-ECM	Factor: 186790115032128288354393552607