9 161 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
86901247	8	26.4	old
12187849367	11	33.5	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	1282 / 9201

Estimated T-Level: 40.7 ⓘ

TF below 2^130 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	406775237858987B	2	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	406775237858987B	2	3678	1	3
Unverified	2020-04-17	Oliver Kruse	2E86579D0003BB__	2	3041	5	3

History

Date	User	Type	Result
2023-07-13	JacobZ	NF-PM1	B1=63000000000, B2=255469764292442700
2021-12-16	Lisander Viaene	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M9161/86901247/12187849367 : 2E86579D0003BB__ PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M9161/86901247/12187849367 : 406775237858987B PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M9161/86901247/12187849367 : 406775237858987B PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M9161/86901247/12187849367 : 406775237858987B PRP without proof (not generated)