4 051 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
371963556136793422583435063	27	88.3	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	16550 / 16550
55	110000000	19439 / 40830

Estimated T-Level: 52.4 ⓘ

TF below 2^169 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	1AD8CDA4FD9A5C86	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	1AD8CDA4FD9A5C86	1	1848	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	A62E36FD58B86FB1	1	3694	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	A62E36FD58B86FB1	1	1060	5	3

History

Date	User	Type	Result
2025-05-09	masser	NF-PP1	Start=94/59, B1=2600000000, B2=2597400000000
2024-02-03	Wentao Huang	C-PRP	M4051/371963556136793422583435063 : A62E36FD58B86FB1
2023-04-16	mikr	NF-PM1	B1=500000000000, B2=2644722368893605000
2021-12-15	Oliver Kruse	NF-PM1	B1=1000000000, B2=1004648912737470
2021-12-14	ANONYMOUS	NF-PM1	B1=101101101, B2=163403994343590
2021-12-14	ANONYMOUS	NF-PM1	B1=1000000, B2=35492998951410
2020-04-17	Oliver Kruse	C-PRP	M4051/371963556136793422583435063 : A62E36FD58B86FB1
2017-10-12	kkmrkkblmbrbk	C-PRP	M4051/371963556136793422583435063 : 1AD8CDA4FD9A5C86
2017-09-21	Oliver Kruse	C-PRP	M4051/371963556136793422583435063 : 1AD8CDA4FD9A5C86
2017-09-21	Oliver Kruse	C-PRP	M4051/371963556136793422583435063 : 1AD8CDA4FD9A5C86