2 and 3
7 and 191
They are: 2, 2, 3 and 3
They are 47 and 53
302 = 2 x 151
18 and all factors of 18. 18 and all factors of 18. 18 and all factors of 18. 18 and all factors of 18.
The factors of 18 are 1,2,3,6,9, and 18. The factors of 81 are 1,3,9,27, and 81.
Itself because 23 is a prime number
49 has only one prime factor and it is 7
98 = 2 x 7 x 7
18 has 6 factors.
The factors of 18 are 1,2,3,6,9 and 18. For them to be common, they need to be compared to another set of factors.
The factors of 18 are 1,2,3,6,9 and 18. For them to be common, they need to be compared to another set of factors.