5 639 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
11279	5	13.5	old
2447327	7	21.2	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	5689 / 16550

Estimated T-Level: 46.7 ⓘ

TF below 2^150 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	B22BCF91A95680A1	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	B22BCF91A95680A1	2	4110	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	F8D8DBD8AE215675	2	4513	5	3
Factored	No proof (small exponent)	2022-05-12	Jorge Coveiro	F8D8DBD8AE215675	1	458	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	F8D8DBD8AE215675	2	2773	5	3

History

Date	User	Type	Result
2025-05-19	masser	NF-PP1	Start=103/17, B1=2100000000, B2=2097900000000
2024-09-14	mikr	NF-PM1	B1=500000000000, B2=1294202799626807070
2024-02-03	Wentao Huang	C-PRP	M5639/11279/2447327 : F8D8DBD8AE215675
2023-07-15	-anonymous-	NF-PM1	B1=44000000000, B2=181125525847266000
2022-05-12	Jorge Coveiro	C-PRP	M5639/11279 : F8D8DBD8AE215675
2021-12-17	Oliver Kruse	NF-PM1	B1=1000000000, B2=1002106985940060
2020-04-17	Oliver Kruse	C-PRP	M5639/11279/2447327 : F8D8DBD8AE215675
2017-10-12	kkmrkkblmbrbk	C-PRP	M5639/11279/2447327 : B22BCF91A95680A1
2017-09-21	Oliver Kruse	C-PRP	M5639/11279/2447327 : B22BCF91A95680A1
2017-09-21	Oliver Kruse	C-PRP	M5639/11279/2447327 : B22BCF91A95680A1