7 951 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
498813937	9	28.9	old
3519072882484457037433	22	71.6	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	6036 / 9201

Estimated T-Level: 43.3 ⓘ

TF below 2^139 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-21	Oliver Kruse	DC38E230032D4D8D	2	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	DC38E230032D4D8D	2	3733	1	3
Verified	2020-04-17	Oliver Kruse	EBDDA2D2478E582A	2	4567	5	3
Verified	2024-07-01	kkmrkkblmbrbk	EBDDA2D2478E582A	2	4950	5	3

History

Date	User	Type	Result
2024-07-01	kkmrkkblmbrbk	C-PRP	M7951/3519072882484457037433/498813937 : EBDDA2D2478E582A PRP: Verified PRP without proof (small exponent)
2023-05-24	JacobZ	NF-PM1	B1=60000000000, B2=244568457101868900
2021-12-16	Lisander Viaene	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M7951/498813937/3519072882484457037433 : EBDDA2D2478E582A PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M7951/498813937/3519072882484457037433 : DC38E230032D4D8D PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M7951/498813937/3519072882484457037433 : DC38E230032D4D8D PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M7951/498813937/3519072882484457037433 : DC38E230032D4D8D PRP without proof (not generated)