5, WHICH IS NOT A WHOLE NUMBER.0, WHICH EQUALS 1PRIME FACTORINGTO PRIM...
5
, which is not a whole number.0
, which equals
1
Prime FactoringTo prime factor a number, write it as the product of its prime factors. For example, the prime factorizationof 24 is241226324 = 2 ×2 ×2 ×3 = 23
×3–
A R I T H M E T I C
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Greatest Common Factor (GCF)The greatest common factor (GCF) of two numbers is the largest whole number that will divide into eithernumber without a remainder. The GCF is often found when reducing fractions, reducing radicals, and fac-toring. One of the ways to find the GCF is to list all of the factors of each of the numbers and select the largestone. For example, to find the GCF of 18 and 48, list all of the factors of each: