To factor the expression \( 24x - 64y \), we first look for the greatest common factor (GCF) of the two terms.
The GCF of \( 24 \) and \( 64 \) is \( 8 \).
Now, we can factor out \( 8 \) from the expression:
\[ 24x - 64y = 8(3x - 8y) \]
Thus, the factored form of the expression is:
\[ 8(3x - 8y) \]
This is a product with a whole number greater than 1.