Q: What are the prime factors of the number 76,322,142?

 A: 2, 3, 13, 23, 29, 163

Why are those the prime factors of the number 76,322,142?

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 76,322,142

76,322,142
Factor Arrows
238,161,071
Factor Arrows
312,720,357
Factor Arrows
34,240,119
Factor Arrows
31,413,373
Factor Arrows
13108,721
Factor Arrows
234,727
Factor Arrows
29163

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, 13, 23, 29, 163

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 13 x 23 x 29 x 163 = 76,322,142

This can also be written as 21 x 33 x 131 x 231 x 291 x 1631 = 76,322,142

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


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