?

Free Version
Difficult

# Factors of an Integer that is Not Prime

ABSALG-GN1FZG

Which of the following sets contains an integer $n$ with $1\le n\le 499$ that is not prime? You may use a calculator.

A

The set of integers with no positive prime factor less than or equal to $23$.

B

The set of integers with no positive prime factor less than or equal to $19$.

C

The set of integers with no positive prime factor less than or equal to $17$.