Q: What are the prime factors of the number 140,712?

 A: 2, 3, 11, 13, 41

Why are those the prime factors of the number 140,712?

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 140,712

140,712
Factor Arrows
270,356
Factor Arrows
235,178
Factor Arrows
217,589
Factor Arrows
35,863
Factor Arrows
11533
Factor Arrows
1341

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, 11, 13, 41

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 13 x 41 = 140,712

This can also be written as 23 x 31 x 111 x 131 x 411 = 140,712

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


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