Q: What are the prime factors of the number 4,618,152?

 A: 2, 3, 7, 11, 17

Why are those the prime factors of the number 4,618,152?

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 4,618,152

4,618,152
Factor Arrows
22,309,076
Factor Arrows
21,154,538
Factor Arrows
2577,269
Factor Arrows
3192,423
Factor Arrows
364,141
Factor Arrows
79,163
Factor Arrows
71,309
Factor Arrows
7187
Factor Arrows
1117

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, 7, 11, 17

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 7 x 7 x 11 x 17 = 4,618,152

This can also be written as 23 x 32 x 73 x 111 x 171 = 4,618,152

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


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