The table shows all the factors of
some numbers. Which of the numbers are prime?
A prime number is divisible only by
itself and one. Another way to say that is that
only factors of prime numbers are itself and one. Which values on this table only
have factors of itself and one?
101 is only divisible by one and
101. 157 is only divisible by one and
157. This means that, out of this list,
101 and 157 are the prime numbers.
133 has more than two factors. And 145 has more than two
factors. This means they are composite
numbers not prime numbers.