Q: What are the prime factors of the number 133,054,170?

 A: 2, 3, 5, 31, 79, 1811

Why are those the prime factors of the number 133,054,170?

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 133,054,170

133,054,170
Factor Arrows
266,527,085
Factor Arrows
322,175,695
Factor Arrows
54,435,139
Factor Arrows
31143,069
Factor Arrows
791,811

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, 31, 79, 1811

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 31 x 79 x 1,811 = 133,054,170

This can also be written as 21 x 31 x 51 x 311 x 791 x 1,8111 = 133,054,170

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


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