Q: What are the prime factors of the number 132,945,450?

 A: 2, 3, 5, 11, 197, 409

Why are those the prime factors of the number 132,945,450?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 132,945,450

132,945,450
Factor Arrows
266,472,725
Factor Arrows
322,157,575
Factor Arrows
54,431,515
Factor Arrows
5886,303
Factor Arrows
1180,573
Factor Arrows
197409

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 5, 11, 197, 409

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 11 x 197 x 409 = 132,945,450

This can also be written as 21 x 31 x 52 x 111 x 1971 x 4091 = 132,945,450

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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