To find the factors of a number you should first break that number down into its prime factors. In this case 65 can be broken down as:
65 = 5x13
To find any other factors, you then multiply any combination of these prime factors together. In this case, the factors of 65 come out as:
1, 5, 13 and 65.
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No 65 is not prime since it has factors of 1 and 65 or 1*65=65 and 5 and 13 or 5*13=65. Prime numbers have only 1 and that number as its factors.
5 and 13
It is a rational number because it has more than two factors
It is a composite number because it has more than two factors
using the factors of 65 you have 1, 65, 13, 5. The factors for 12 are 1,12, 3, 4, 2, 6. Since none of those are the same, you cannot reduce the fraction with a whole number.