Answer :
-- Take the number to be divided.
-- Find all of its factors.
-- If you divide it by one of its factors, then there will be no remainder.
-- If you divide it by any other number, then there will be a remainder.
-- Find all of its factors.
-- If you divide it by one of its factors, then there will be no remainder.
-- If you divide it by any other number, then there will be a remainder.
if there's factors there is no remainders but if there no factors is then is has to have a remainder its like the opposite