Q: What are the prime factors of the number 156,216,508?

 A: 2, 7, 383, 2081

Why are those the prime factors of the number 156,216,508?

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 156,216,508

156,216,508
Factor Arrows
278,108,254
Factor Arrows
239,054,127
Factor Arrows
75,579,161
Factor Arrows
7797,023
Factor Arrows
3832,081

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, 7, 383, 2081

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 7 x 383 x 2,081 = 156,216,508

This can also be written as 22 x 72 x 3831 x 2,0811 = 156,216,508

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


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