5 323 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

Factored

Factor	Digits	Bits	Date
2372950817	10	31.1	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	9592 / 16550

Estimated T-Level: 47.9 ⓘ

TF below 2^154 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	9638173F76CD5036	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	9638173F76CD5036	1	2310	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	C6FD0A466A31ADC9	1	1281	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	C6FD0A466A31ADC9	1	49	5	3

History

Date	User	Type	Result
2025-05-01	masser	NF-PP1	Start=177/43, B1=2100000000, B2=2097900000000
2024-02-04	mikr	NF-PM1	B1=500000000000, B2=1311295166917335600
2024-02-03	Wentao Huang	C-PRP	M5323/2372950817 : C6FD0A466A31ADC9
2023-07-03	-anonymous-	NF-PM1	B1=59000000000, B2=241667483419362000
2022-01-24	Ethan O'Connor	NF-PM1	B1=1300000000
2021-12-16	Oliver Kruse	NF-PM1	B1=1000000000, B2=1002849399191640
2020-04-17	Oliver Kruse	C-PRP	M5323/2372950817 : C6FD0A466A31ADC9
2017-10-12	kkmrkkblmbrbk	C-PRP	M5323/2372950817 : 9638173F76CD5036
2017-09-21	Oliver Kruse	C-PRP	M5323/2372950817 : 9638173F76CD5036
2017-09-21	Oliver Kruse	C-PRP	M5323/2372950817 : 9638173F76CD5036