Q: What are the prime factors of the number 140,031,210?

 A: 2, 3, 5, 11, 17, 109, 229

Why are those the prime factors of the number 140,031,210?

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 140,031,210

140,031,210
Factor Arrows
270,015,605
Factor Arrows
323,338,535
Factor Arrows
54,667,707
Factor Arrows
11424,337
Factor Arrows
1724,961
Factor Arrows
109229

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, 11, 17, 109, 229

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 11 x 17 x 109 x 229 = 140,031,210

This can also be written as 21 x 31 x 51 x 111 x 171 x 1091 x 2291 = 140,031,210

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


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