Q: What are the prime factors of the number 140,324,656?

 A: 2, 23, 59, 281

Why are those the prime factors of the number 140,324,656?

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 140,324,656

140,324,656
Factor Arrows
270,162,328
Factor Arrows
235,081,164
Factor Arrows
217,540,582
Factor Arrows
28,770,291
Factor Arrows
23381,317
Factor Arrows
2316,579
Factor Arrows
59281

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, 23, 59, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 23 x 23 x 59 x 281 = 140,324,656

This can also be written as 24 x 232 x 591 x 2811 = 140,324,656

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


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