7 103 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
14207	5	13.8	old

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	2609 / 16550

Estimated T-Level: 45.8 ⓘ

TF below 2^147 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	435AE083985B00F5	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	435AE083985B00F5	1	1926	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	11A50520A59707D8	1	5728	5	3
Verified	No proof (small exponent)	2022-05-12	Jorge Coveiro	11A50520A59707D8	1	3127	5	3

History

Date	User	Type	Result
2025-03-25	masser	NF-PP1	Start=187/61, B1=1000000000, B2=999000000000
2025-03-16	masser	NF-PP1	Start=6/5, B1=1000000000, B2=999000000000
2025-03-08	masser	NF-PP1	Start=2/7, B1=1000000000, B2=999000000000
2023-08-24	-anonymous-	NF-PM1	B1=34000000000, B2=142096338314180250
2022-05-12	Jorge Coveiro	C-PRP	M7103/14207 : 11A50520A59707D8
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2021-12-16	LordJulius	NF-PM1	B1=1000000000, B2=43319329623570
2020-04-17	Oliver Kruse	C-PRP	M7103/14207 : 11A50520A59707D8
2017-10-12	kkmrkkblmbrbk	C-PRP	M7103/14207 : 435AE083985B00F5
2017-09-21	Oliver Kruse	C-PRP	M7103/14207 : 435AE083985B00F5
2017-09-21	Oliver Kruse	C-PRP	M7103/14207 : 435AE083985B00F5