6 949 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
6879511	7	22.7	old
3554523891146312459670279908364151	34	111.5	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	2671 / 16550

Estimated T-Level: 45.8 ⓘ

TF below 2^147 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	C872EB0A81F41886	2	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	C872EB0A81F41886	2	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	C872EB0A81F41886	2	1384	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	32DE7E678056E67F	2	521	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	32DE7E678056E67F	2	71	5	3

History

Date	User	Type	Result
2025-03-24	masser	NF-PP1	Start=99/29, B1=1000000000, B2=999000000000
2025-03-16	masser	NF-PP1	Start=6/5, B1=1000000000, B2=999000000000
2025-03-07	masser	NF-PP1	Start=2/7, B1=1000000000, B2=999000000000
2024-02-03	Wentao Huang	C-PRP	M6949/6879511/3554523891146312459670279908364151 : 32DE7E678056E67F
2023-08-19	-anonymous-	NF-PM1	B1=35000000000, B2=149103333456127050
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M6949/6879511/3554523891146312459670279908364151 : 32DE7E678056E67F
2017-12-07	ATH	C-PRP	M6949/6879511/3554523891146312459670279908364151 : C872EB0A81F41886
2017-10-02	kkmrkkblmbrbk	C-PRP	M6949/6879511/3554523891146312459670279908364151 : C872EB0A81F41886
2017-09-21	Oliver Kruse	C-PRP	M6949/known_factors : C872EB0A81F41886