Q: What are the prime factors of the number 53,421,536?

 A: 2, 7, 71, 3359

Why are those the prime factors of the number 53,421,536?

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 53,421,536

53,421,536
Factor Arrows
226,710,768
Factor Arrows
213,355,384
Factor Arrows
26,677,692
Factor Arrows
23,338,846
Factor Arrows
21,669,423
Factor Arrows
7238,489
Factor Arrows
713,359

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, 7, 71, 3359

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 71 x 3,359 = 53,421,536

This can also be written as 25 x 71 x 711 x 3,3591 = 53,421,536

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


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