Q: What are the prime factors of the number 19,660,032?

 A: 2, 3, 7, 23, 53

Why are those the prime factors of the number 19,660,032?

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 19,660,032

19,660,032
Factor Arrows
29,830,016
Factor Arrows
24,915,008
Factor Arrows
22,457,504
Factor Arrows
21,228,752
Factor Arrows
2614,376
Factor Arrows
2307,188
Factor Arrows
2153,594
Factor Arrows
276,797
Factor Arrows
325,599
Factor Arrows
38,533
Factor Arrows
71,219
Factor Arrows
2353

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, 23, 53

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 3 x 3 x 7 x 23 x 53 = 19,660,032

This can also be written as 28 x 32 x 71 x 231 x 531 = 19,660,032

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


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