7 129 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
1867799	7	20.8	old
7973671345911024691309601	25	82.7	old
40896927904839545543238878809439	32	105.0	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	2684 / 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	A48EC3A60F560F10	3	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	A48EC3A60F560F10	3	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	A48EC3A60F560F10	3	2234	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	DA6D97FCBBF5B8CF	3	305	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	DA6D97FCBBF5B8CF	3	950	5	3

History

Date	User	Type	Result
2025-03-25	masser	NF-PP1	Start=133/59, B1=1000000000, B2=999000000000
2025-03-17	masser	NF-PP1	Start=6/5, B1=1000000000, B2=999000000000
2025-03-08	masser	NF-PP1	Start=2/7, B1=1000000000, B2=999000000000
2024-02-03	Wentao Huang	C-PRP	M7129/1867799/7973671345911024691309601/40896927904839545543238878809439 : DA6D97FCBBF5B8CF
2023-08-25	-anonymous-	NF-PM1	B1=34000000000, B2=142096338314180250
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M7129/1867799/7973671345911024691309601/40896927904839545543238878809439 : DA6D97FCBBF5B8CF
2017-12-07	ATH	C-PRP	M7129/1867799/7973671345911024691309601/40896927904839545543238878809439 : A48EC3A60F560F10
2017-10-02	kkmrkkblmbrbk	C-PRP	M7129/1867799/7973671345911024691309601/40896927904839545543238878809439 : A48EC3A60F560F10
2017-09-21	Oliver Kruse	C-PRP	M7129/known_factors : A48EC3A60F560F10