Question

The largest prime factor of sixty-three is _____.

2
3
7
63

Answer 1

Factors are numbers you can multiply together to get another number. A prime number can be divided evenly by 1 and itself.
63: 1, 3, 7, 9, 21, 63 
The largest prime factor of 63 is 7

Answer 2

 A prime number can be divided evenly by 1 and itself. 63: 1, 3, 7, 9, 21, 63
The largest prime factor of 63 is 7.