Q: What are the prime factors of the number 156,416,330?

 A: 2, 5, 7, 23, 13879

Why are those the prime factors of the number 156,416,330?

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 156,416,330

156,416,330
Factor Arrows
278,208,165
Factor Arrows
515,641,633
Factor Arrows
72,234,519
Factor Arrows
7319,217
Factor Arrows
2313,879

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, 5, 7, 23, 13879

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 7 x 23 x 13,879 = 156,416,330

This can also be written as 21 x 51 x 72 x 231 x 13,8791 = 156,416,330

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


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