5 669 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Assignments

Assigned	User	Work Type	Stage	% Done	Updated	Est Complete	Expired
2026-02-18	VGDominion	ECM	C27S1	54.82 %	2026-02-22	2026-03-05

Factored

Factor	Digits	Bits	Date
122398868791	12	36.8	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	4989 / 16550

Estimated T-Level: 46.5 ⓘ

TF below 2^149 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	F44BE04CACCA12C9	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	F44BE04CACCA12C9	1	4009	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	7E7C05E4CA56859B	1	2802	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	7E7C05E4CA56859B	1	1745	5	3

History

Date	User	Type	Result
2025-05-22	masser	NF-PP1	Start=72/17, B1=2100000000, B2=2097900000000
2024-12-07	mikr	NF-PM1	B1=500000000000, B2=1405366866901097100
2024-02-03	Wentao Huang	C-PRP	M5669/122398868791 : 7E7C05E4CA56859B
2023-07-17	-anonymous-	NF-PM1	B1=44000000000, B2=181125525847266000
2022-01-24	Ethan O'Connor	NF-PM1	B1=1300000000
2021-12-17	Oliver Kruse	NF-PM1	B1=1000000000, B2=1006836580309560
2021-12-14	ANONYMOUS	NF-PM1	B1=1000000, B2=58190952529710
2020-04-17	Oliver Kruse	C-PRP	M5669/122398868791 : 7E7C05E4CA56859B
2017-10-12	kkmrkkblmbrbk	C-PRP	M5669/122398868791 : F44BE04CACCA12C9
2017-09-21	Oliver Kruse	C-PRP	M5669/122398868791 : F44BE04CACCA12C9
2017-09-21	Oliver Kruse	C-PRP	M5669/122398868791 : F44BE04CACCA12C9