8 039 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁴⁴

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	9201 / 9201
50	44000000	8344 / 16550

Estimated T-Level: 47.5 ⓘ

TF below 2^153 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	7A4E90C816C322FC	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	7A4E90C816C322FC	2	4096	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	88AED86B5C6CD3D0	2	7593	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	88AED86B5C6CD3D0	2	3743	5	3

History

Date	User	Type	Result
2025-05-27	masser	NF-PP1	Start=186/29, B1=1300000000, B2=1298700000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M8039/11908411871/968554799 : 88AED86B5C6CD3D0
2023-05-29	JacobZ	NF-PM1	B1=73000000000, B2=299074993103236350
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M8039/968554799/11908411871 : 88AED86B5C6CD3D0
2017-10-12	kkmrkkblmbrbk	C-PRP	M8039/968554799/11908411871 : 7A4E90C816C322FC
2017-09-21	Oliver Kruse	C-PRP	M8039/968554799/11908411871 : 7A4E90C816C322FC
2017-09-21	Oliver Kruse	C-PRP	M8039/968554799/11908411871 : 7A4E90C816C322FC