6 959 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
55673	5	15.8	old
11525167797695238703728323038967	32	103.2	old
15057974223738705067611652509724545398689	41	133.5	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	2524 / 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	BA4485CDCC948CF5	3	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	BA4485CDCC948CF5	3	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	BA4485CDCC948CF5	3	2134	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	5BD6A7DBF53F91F5	3	5845	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	5BD6A7DBF53F91F5	3	3108	5	3

History

Date	User	Type	Result
2025-03-24	masser	NF-PP1	Start=188/47, B1=1000000000, B2=999000000000
2025-03-15	masser	NF-PP1	Start=6/5, B1=1000000000, B2=999000000000
2025-03-07	masser	NF-PP1	Start=2/7, B1=1000000000, B2=999000000000
2024-02-03	Wentao Huang	C-PRP	M6959/55673/11525167797695238703728323038967/15057974223738705067611652509724545398689 : 5BD6A7DBF53F91F5
2023-08-19	-anonymous-	NF-PM1	B1=35000000000, B2=143589103727719650
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M6959/55673/11525167797695238703728323038967/15057974223738705067611652509724545398689 : 5BD6A7DBF53F91F5
2017-12-07	ATH	C-PRP	M6959/55673/11525167797695238703728323038967/15057974223738705067611652509724545398689 : BA4485CDCC948CF5
2017-10-02	kkmrkkblmbrbk	C-PRP	M6959/55673/11525167797695238703728323038967/15057974223738705067611652509724545398689 : BA4485CDCC948CF5
2017-09-21	Oliver Kruse	C-PRP	M6959/known_factors : BA4485CDCC948CF5