11 777 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
373660657	9	28.5	old
83440981583468744603814122470559	32	106.0	2017-03-12 18:41:35

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1917 / 9201

Estimated T-Level: 41.0 ⓘ

TF below 2^131 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	06CAC508D7249F05	2	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	06CAC508D7249F05	2	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	06CAC508D7249F05	2	5382	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	9EF46F8C58C71516	2	6054	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	9EF46F8C58C71516	2	9548	5	3

History

Date	User	Type	Result
2025-03-12	masser	NF-PP1	Start=85/13, B1=430000000, B2=429570000000
2025-03-01	masser	NF-PP1	Start=6/5, B1=430000000, B2=429570000000
2025-01-22	masser	NF-PP1	Start=2/7, B1=430000000, B2=429570000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M11777/373660657/83440981583468744603814122470559 : 9EF46F8C58C71516
2023-03-26	-anonymous-	NF-PM1	B1=100000000000, B2=122192573512709700
2020-04-17	Oliver Kruse	C-PRP	M11777/373660657/83440981583468744603814122470559 : 9EF46F8C58C71516
2017-12-07	ATH	C-PRP	M11777/373660657/83440981583468744603814122470559 : 06CAC508D7249F05
2017-10-02	kkmrkkblmbrbk	C-PRP	M11777/373660657/83440981583468744603814122470559 : 06CAC508D7249F05
2017-09-21	Oliver Kruse	C-PRP	M11777/373660657/83440981583468744603814122470559 : 06CAC508D7249F05
2017-09-21	Oliver Kruse	C-PRP	M11777/373660657/83440981583468744603814122470559 : 06CAC508D7249F05
2017-03-12	kkmrkkblmbrbk	F-ECM	Factor: 83440981583468744603814122470559
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=10000000000, E=12