Q: What are the prime factors of the number 163,210,768?

 A: 2, 7, 179, 1163

Why are those the prime factors of the number 163,210,768?

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 163,210,768

163,210,768
Factor Arrows
281,605,384
Factor Arrows
240,802,692
Factor Arrows
220,401,346
Factor Arrows
210,200,673
Factor Arrows
71,457,239
Factor Arrows
7208,177
Factor Arrows
1791,163

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, 179, 1163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 179 x 1,163 = 163,210,768

This can also be written as 24 x 72 x 1791 x 1,1631 = 163,210,768

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


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