9 199 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
53354201	8	25.7	old
27501538836418563053497	23	74.5	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	6801 / 16550

Estimated T-Level: 47.1 ⓘ

TF below 2^151 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	0FDE4B15B81426CB	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	0FDE4B15B81426CB	2	4949	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	6EF2A0C060FD4DFA	2	8756	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	6EF2A0C060FD4DFA	2	2707	5	3

History

Date	User	Type	Result
2025-04-11	masser	NF-PP1	Start=146/31, B1=1000000000, B2=999000000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M9199/27501538836418563053497/53354201 : 6EF2A0C060FD4DFA
2023-07-12	JacobZ	NF-PM1	B1=63000000000, B2=255469764292442700
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M9199/53354201/27501538836418563053497 : 6EF2A0C060FD4DFA
2017-10-12	kkmrkkblmbrbk	C-PRP	M9199/53354201/27501538836418563053497 : 0FDE4B15B81426CB
2017-09-21	Oliver Kruse	C-PRP	M9199/53354201/27501538836418563053497 : 0FDE4B15B81426CB
2017-09-21	Oliver Kruse	C-PRP	M9199/53354201/27501538836418563053497 : 0FDE4B15B81426CB