Q: What are the prime factors of the number 1,624,064?

 A: 2, 13, 61

Why are those the prime factors of the number 1,624,064?

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 1,624,064

1,624,064
Factor Arrows
2812,032
Factor Arrows
2406,016
Factor Arrows
2203,008
Factor Arrows
2101,504
Factor Arrows
250,752
Factor Arrows
225,376
Factor Arrows
212,688
Factor Arrows
26,344
Factor Arrows
23,172
Factor Arrows
21,586
Factor Arrows
2793
Factor Arrows
1361

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, 61

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 2 x 2 x 2 x 13 x 61 = 1,624,064

This can also be written as 211 x 131 x 611 = 1,624,064

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


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