Q: What are the prime factors of the number 133,506,768?

 A: 2, 3, 19, 146389

Why are those the prime factors of the number 133,506,768?

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 133,506,768

133,506,768
Factor Arrows
266,753,384
Factor Arrows
233,376,692
Factor Arrows
216,688,346
Factor Arrows
28,344,173
Factor Arrows
32,781,391
Factor Arrows
19146,389

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, 19, 146389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 19 x 146,389 = 133,506,768

This can also be written as 24 x 31 x 191 x 146,3891 = 133,506,768

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


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