Q: What are the prime factors of the number 13,460,736?

 A: 2, 3, 17, 1031

Why are those the prime factors of the number 13,460,736?

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 13,460,736

13,460,736
Factor Arrows
26,730,368
Factor Arrows
23,365,184
Factor Arrows
21,682,592
Factor Arrows
2841,296
Factor Arrows
2420,648
Factor Arrows
2210,324
Factor Arrows
2105,162
Factor Arrows
252,581
Factor Arrows
317,527
Factor Arrows
171,031

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, 17, 1031

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 17 x 1,031 = 13,460,736

This can also be written as 28 x 31 x 171 x 1,0311 = 13,460,736

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


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