Q: What are the prime factors of the number 478,305,152?

 A: 2, 13, 22111

Why are those the prime factors of the number 478,305,152?

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 478,305,152

478,305,152
Factor Arrows
2239,152,576
Factor Arrows
2119,576,288
Factor Arrows
259,788,144
Factor Arrows
229,894,072
Factor Arrows
214,947,036
Factor Arrows
27,473,518
Factor Arrows
23,736,759
Factor Arrows
13287,443
Factor Arrows
1322,111

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, 13, 22111

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 13 x 13 x 22,111 = 478,305,152

This can also be written as 27 x 132 x 22,1111 = 478,305,152

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


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