Question

Is the number 141 prime or composite?

Answer 1

141 is composite.

Explanation:

141 can be divided by three ( if the sum of the digits of a number is exactly divisible by 3 then the number itself is exactly divisible by 3 ). `1+4+1 =6` six can be divided by 3 so 141 can be divided by 3

`141/3 =47" "` so `" " 3 xx 47 = 141`

since 141 can be factored into `3 xx 47" "` 141 is a composite number.

Prime numbers can not be factored except by themselves and one