13 is not a factor of 126.
Yes, 13 is a prime factor.
First, look for a factor. The most obvious would be 5, because the number ends in a five, so must be divisible by 5. 65/5 = 13, so the other factor will be 13. So 65 / \ 5 13 and since both 5 and 13 are prime numbers, the tree can't go on any further.
XIII
Multiples of 13
13 is already prime. It doesn't need a rainbow.
12
65 / \ 13 5
26 / \ 2 13
13 is already prime. It doesn't need a tree.
3 * 13 (both prime numbers)
To find the factor rainbow of 78, we first determine the factors of 78, which are 1, 2, 3, 6, 13, 26, 39, and 78. We then arrange these factors in a rainbow pattern, starting with 1 and 78 at the ends, and pairing factors that multiply together to equal 78, such as 2 and 39, 3 and 26, and 6 and 13. This visually represents the prime factorization of 78 as 2 x 3 x 13.
Multiples of 13, like 13, 26 and 39.
52 / \ 26 2 / \ 13 2 Kind of like that I think. Just get down to prime numbers
Multiples of 13 like 13, 26, 39 and so on.
It can be. 13 is a factor of 26.
13 is not a factor of 126.