9 127 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
146033	6	17.2	old
8707159	7	23.1	old
644652703344196524665277964939821396323946911296066094809	57	188.7	2025-08-12 23:10:57

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	6837 / 16550

Estimated T-Level: 47.1 ⓘ

TF below 2^151 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	ED65785C3485356B	2	0	1	3
Factored	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	ED65785C3485356B	2	5221	1	3
Factored	No proof (small exponent)	2020-04-17	Oliver Kruse	1B9FEB7D7CC1341F	2	2856	5	3
Factored	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	1B9FEB7D7CC1341F	2	5998	5	3
Verified	No proof (small exponent)	2025-08-19	MarkS	1B9FEB7D7CC1341F	3	5507	5	3

History

Date	User	Type	Result
2025-08-19	MarkS	C-PRP	M9127/146033/8707159/644652703344196524665277964939821396323946911296066094809 : 1B9FEB7D7CC1341F
2025-08-12	Ryan Propper	F-ECM	Factor: 644652703344196524665277964939821396323946911296066094809
2025-04-19	masser	NF-PP1	Start=198/71, B1=1000000000, B2=999000000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M9127/146033/8707159 : 1B9FEB7D7CC1341F
2023-07-15	JacobZ	NF-PM1	B1=64000000000, B2=263527252205367150
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M9127/146033/8707159 : 1B9FEB7D7CC1341F
2017-10-12	kkmrkkblmbrbk	C-PRP	M9127/146033/8707159 : ED65785C3485356B
2017-09-21	Oliver Kruse	C-PRP	M9127/146033/8707159 : ED65785C3485356B
2017-09-21	Oliver Kruse	C-PRP	M9127/146033/8707159 : ED65785C3485356B