5 119 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
82978991	8	26.3	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	15057 / 40830

Estimated T-Level: 51.8 ⓘ

TF below 2^167 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	5EBC8C230D5CDBD5	1	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	5EBC8C230D5CDBD5	1	2862	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	BB0D3B2A088725D5	1	2693	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	BB0D3B2A088725D5	1	4785	5	3

History

Date	User	Type	Result
2025-04-22	masser	NF-PP1	Start=79/71, B1=2100000000, B2=2097900000000
2024-02-03	Wentao Huang	C-PRP	M5119/82978991 : BB0D3B2A088725D5
2023-09-08	mikr	NF-PM1	B1=500000000000, B2=1311690346546479900
2023-06-12	-anonymous-	NF-PM1	B1=61000000000, B2=612320454265870350
2021-12-16	Oliver Kruse	NF-PM1	B1=1000000000, B2=1002849399191640
2021-12-15	ANONYMOUS	NF-PM1	B1=101101101, B2=242017973957760
2020-04-17	Oliver Kruse	C-PRP	M5119/82978991 : BB0D3B2A088725D5
2017-10-12	kkmrkkblmbrbk	C-PRP	M5119/82978991 : 5EBC8C230D5CDBD5
2017-09-21	Oliver Kruse	C-PRP	M5119/82978991 : 5EBC8C230D5CDBD5
2017-09-21	Oliver Kruse	C-PRP	M5119/82978991 : 5EBC8C230D5CDBD5