5 591 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
52462455217	11	35.6	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	9537 / 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	73B1D0E1318A23AB	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	73B1D0E1318A23AB	1	2415	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	7F6E4330546BB820	1	5256	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	7F6E4330546BB820	1	611	5	3

History

Date	User	Type	Result
2025-05-18	masser	NF-PP1	Start=133/29, B1=2100000000, B2=2097900000000
2024-08-27	mikr	NF-PM1	B1=500000000000, B2=1293901541989236180
2024-02-03	Wentao Huang	C-PRP	M5591/52462455217 : 7F6E4330546BB820
2023-07-14	-anonymous-	NF-PM1	B1=45000000000, B2=181622797963056450
2022-01-26	Ethan O'Connor	NF-PM1	B1=1300000000
2021-12-16	Oliver Kruse	NF-PM1	B1=1000000000, B2=1002106985940060
2021-12-14	ANONYMOUS	NF-PM1	B1=1000000, B2=58206549631230
2020-04-17	Oliver Kruse	C-PRP	M5591/52462455217 : 7F6E4330546BB820
2017-10-12	kkmrkkblmbrbk	C-PRP	M5591/52462455217 : 73B1D0E1318A23AB
2017-09-21	Oliver Kruse	C-PRP	M5591/52462455217 : 73B1D0E1318A23AB
2017-09-21	Oliver Kruse	C-PRP	M5591/52462455217 : 73B1D0E1318A23AB