14 947 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

Assignments

Assigned	User	Work Type	Stage	% Done	Updated	Est Complete	Expired
2026-04-15	-anonymous-	ECM			2026-04-15	2026-04-17

Factored

Factor	Digits	Bits	Date
3444008121568362523562999	25	81.5	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	3231 / 9201

Estimated T-Level: 41.8 ⓘ

TF below 2^134 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	A0E29D9F7FD94BDD	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	A0E29D9F7FD94BDD	1	11125	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	826B051A459646DC	1	2935	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	826B051A459646DC	1	14488	5	3

History

Date	User	Type	Result
2025-02-03	masser	NF-PP1	Start=2/7, B1=355000000, B2=354645000000
2025-02-02	masser	NF-PP1	Start=197/31, B1=355000000, B2=354645000000
2025-01-13	masser	NF-PP1	Start=6/5, B1=355000000, B2=354645000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M14947/3444008121568362523562999 : 826B051A459646DC
2024-05-21	Anton Repko	NF-PM1	B1=1000000000000, B2=1401075893663576130
2022-02-18	Ethan O'Connor	NF-PM1	B1=10000000000, B2=91404070696018080
2022-02-06	ANONYMOUS	NF-PM1	B1=50000
2020-04-17	Oliver Kruse	C-PRP	M14947/3444008121568362523562999 : 826B051A459646DC
2017-10-12	kkmrkkblmbrbk	C-PRP	M14947/3444008121568362523562999 : A0E29D9F7FD94BDD
2017-09-21	Oliver Kruse	C-PRP	M14947/3444008121568362523562999 : A0E29D9F7FD94BDD
2017-09-21	Oliver Kruse	C-PRP	M14947/3444008121568362523562999 : A0E29D9F7FD94BDD