first only look at the whole number, ignore the decimals
now go through divisibility rules for 2,3,4,5,6,8,9.
17 - Make a two digit number using the ones place (first) tens place (second)
24 is the number, first find all the factors of 24 then determine which ones are prime
24 - 1,2,3,4,6,8,12,24.
prime factors - 2,3.