9 677 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
607618831	9	29.2	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	6764 / 16550

Estimated T-Level: 47.0 ⓘ

TF below 2^151 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	7DADAFC454AC2757	1	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	7DADAFC454AC2757	1	201	1	3
Verified	2020-04-17	Oliver Kruse	370CA7916405F2E1	1	6278	5	3
Verified	2024-07-01	kkmrkkblmbrbk	370CA7916405F2E1	1	470	5	3

History

Date	User	Type	Result
2024-07-01	kkmrkkblmbrbk	C-PRP	M9677/607618831 : 370CA7916405F2E1 PRP: Verified PRP without proof (small exponent)
2023-06-19	JacobZ	NF-PM1	B1=60000000000, B2=244568457101868900
2022-01-03	Lisander Viaene	NF-PM1	B1=100000000, B2=173545170
2020-04-17	Oliver Kruse	C-PRP	M9677/607618831 : 370CA7916405F2E1 PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M9677/607618831 : 7DADAFC454AC2757 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M9677/607618831 : 7DADAFC454AC2757 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M9677/607618831 : 7DADAFC454AC2757 PRP without proof (not generated)