Q: What are the prime factors of the number 156,501,520?

 A: 2, 5, 7, 101, 2767

Why are those the prime factors of the number 156,501,520?

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 156,501,520

156,501,520
Factor Arrows
278,250,760
Factor Arrows
239,125,380
Factor Arrows
219,562,690
Factor Arrows
29,781,345
Factor Arrows
51,956,269
Factor Arrows
7279,467
Factor Arrows
1012,767

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, 101, 2767

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 101 x 2,767 = 156,501,520

This can also be written as 24 x 51 x 71 x 1011 x 2,7671 = 156,501,520

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


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