8 669 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
2618039	7	21.3	old
1337175913	10	30.3	old
58974274117067620152878629730547342546447936580573282628911	59	195.2	2025-08-09 10:52:26

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	8246 / 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
Factored	No proof (small exponent)	2017-09-21	Oliver Kruse	0B87AE930BB87597	2	0	1	3
Factored	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	0B87AE930BB87597	2	2692	1	3
Factored	No proof (small exponent)	2020-04-17	Oliver Kruse	14DF8E7A63C9861C	2	5225	5	3
Factored	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	14DF8E7A63C9861C	2	5122	5	3
Verified	No proof (small exponent)	2025-08-15	Vinickw	14DF8E7A63C9861C	3	6101	5	3
Verified	No proof (small exponent)	2025-08-20	Cimaron	14DF8E7A63C9861C	3	512	5	3

History

Date	User	Type	Result
2025-08-20	Cimaron	C-PRP	M8669/2618039/1337175913/58974274117067620152878629730547342546447936580573282628911 : 14DF8E7A63C9861C
2025-08-15	Vinickw	C-PRP	M8669/2618039/1337175913/58974274117067620152878629730547342546447936580573282628911 : 14DF8E7A63C9861C
2025-08-09	Ryan Propper	F-ECM	Factor: 58974274117067620152878629730547342546447936580573282628911
2025-05-04	masser	NF-PP1	Start=105/19, B1=1000000000, B2=999000000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M8669/1337175913/2618039 : 14DF8E7A63C9861C
2023-08-12	JacobZ	NF-PM1	B1=67000000000, B2=265422648792401100
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M8669/2618039/1337175913 : 14DF8E7A63C9861C
2017-10-12	kkmrkkblmbrbk	C-PRP	M8669/2618039/1337175913 : 0B87AE930BB87597
2017-09-21	Oliver Kruse	C-PRP	M8669/2618039/1337175913 : 0B87AE930BB87597
2017-09-21	Oliver Kruse	C-PRP	M8669/2618039/1337175913 : 0B87AE930BB87597