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Prime Factorization
Prime Number: A prime number is a whole number, greater than 1 that can be evenly
divided by 1 and itself.
Examples of prime numbers:
2, 3, 5, 7, 11, 13,...
Factors: The factors of a number are numbers that when you multiply them together you
get the original number.
Example:
Two factors of 8 are 2 and 4. 2 x 4 = 8
Two factors of 10 are 2 and 5. 2 x 5 = 10
Three factors of 30 are 2, 5, and 3. 2 x 5 x 3 = 30
Prime Factorization: Is when you find all the factors of a number that are prime.
Example: What is the prime factorization of 12.
12
2
x
6
2
2 x 2 x 3 = 12
x
3
or
Discussion: Prime numbers may at first appear to be something that has no value, but in
prime factorization, this will help you get the Greatest Common Factor (GCF), the Least
Common Multiple (LCM), and other things in math.
Prime Numbers: Below is a listing of the first 50 prime numbers
2
31
73
127
179
3
37
79
131
181
5
41
83
137
191
7
43
89
139
193
11
47
97
149
197
13
53
101
151
199
17
59
103
157
211
19
61
107
163
223
23
67
109
167
227
29
71
113
173
229