Chapter 1 - Introduction to Algebraic Expressions - 1.3 Fraction Notation - 1.3 Exercise Set - Page 26: 24

$2\times17$

A number is prime if it has only two factors: 1 and itself. We know that the factors of 34 are 1, 2, 17, and 34. 2 is a prime number, so we can divide 34 by 2 $34\div2=17$ 17 is also a prime number Therefore, the prime factorization of 34 is $2\times17$.