8 039 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
968554799	9	29.9	old
11908411871	11	33.5	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	6358 / 9201

Estimated T-Level: 43.5 ⓘ

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	7A4E90C816C322FC	2	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	7A4E90C816C322FC	2	4096	1	3
Verified	2020-04-17	Oliver Kruse	88AED86B5C6CD3D0	2	7593	5	3
Verified	2024-07-01	kkmrkkblmbrbk	88AED86B5C6CD3D0	2	3743	5	3

History

Date	User	Type	Result
2024-07-01	kkmrkkblmbrbk	C-PRP	M8039/11908411871/968554799 : 88AED86B5C6CD3D0 PRP: Verified PRP without proof (small exponent)
2023-05-29	JacobZ	NF-PM1	B1=73000000000, B2=299074993103236350
2021-12-16	Lisander Viaene	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M8039/968554799/11908411871 : 88AED86B5C6CD3D0 PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M8039/968554799/11908411871 : 7A4E90C816C322FC PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M8039/968554799/11908411871 : 7A4E90C816C322FC PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M8039/968554799/11908411871 : 7A4E90C816C322FC PRP without proof (not generated)