Q: What are the prime factors of the number 140,440,230?

 A: 2, 3, 5, 7, 17, 31, 47

Why are those the prime factors of the number 140,440,230?

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 140,440,230

140,440,230
Factor Arrows
270,220,115
Factor Arrows
323,406,705
Factor Arrows
37,802,235
Factor Arrows
32,600,745
Factor Arrows
3866,915
Factor Arrows
5173,383
Factor Arrows
724,769
Factor Arrows
171,457
Factor Arrows
3147

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, 5, 7, 17, 31, 47

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 5 x 7 x 17 x 31 x 47 = 140,440,230

This can also be written as 21 x 34 x 51 x 71 x 171 x 311 x 471 = 140,440,230

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


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