18 143 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
471719	6	18.8	old
6966913	7	22.7	2008-08-26 19:58:52
76672319	8	26.2	2008-08-26 19:58:52
6328778711369	13	42.5	2008-08-26 19:58:52
6217240858186961	16	52.5	2008-08-29 02:24:39
12315004021678079	17	53.5	2008-08-29 02:24:39

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	2754 / 4588

Estimated T-Level: 38.0 ⓘ

TF below 2^121 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-21	Oliver Kruse	D5FF45725BFF026B	6	0	1	3
Verified	2017-10-02	kkmrkkblmbrbk	D5FF45725BFF026B	6	0	1	3
Verified	2017-12-07	ATH	D5FF45725BFF026B	6	4611	1	3
Unverified	2020-04-17	Oliver Kruse	BBFA662EC9F125__	6	2445	5	3

History

Date	User	Type	Result
2023-05-20	JacobZ	NF-PM1	B1=5800000000, B2=16258362259549410
2021-08-27	Seth_Tr	NF-PM1	B1=400000000
2020-04-17	Oliver Kruse	C-PRP	M18143/471719/6966913/76672319/6328778711369/6217240858186961/12315004021678079 : BBFA662EC9F125__ PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M18143/471719/6966913/76672319/6328778711369/6217240858186961/12315004021678079 : D5FF45725BFF026B PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M18143/471719/6966913/76672319/6328778711369/6217240858186961/12315004021678079 : D5FF45725BFF026B PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M18143/471719/6966913/76672319/6328778711369/6217240858186961/12315004021678079 : D5FF45725BFF026B PRP without proof (not generated)
2008-08-29	-Anonymous-	F	Factor: 12315004021678079
2008-08-29	-Anonymous-	F	Factor: 6217240858186961
2008-08-26	-Anonymous-	F	Factor: 6328778711369
2008-08-26	-Anonymous-	F	Factor: 76672319
2008-08-26	-Anonymous-	F	Factor: 6966913