Q: What are the prime factors of the number 32,304,420?

 A: 2, 3, 5, 17, 23

Why are those the prime factors of the number 32,304,420?

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 32,304,420

32,304,420
Factor Arrows
216,152,210
Factor Arrows
28,076,105
Factor Arrows
32,692,035
Factor Arrows
3897,345
Factor Arrows
3299,115
Factor Arrows
399,705
Factor Arrows
333,235
Factor Arrows
56,647
Factor Arrows
17391
Factor Arrows
1723

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, 5, 17, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 3 x 5 x 17 x 17 x 23 = 32,304,420

This can also be written as 22 x 35 x 51 x 172 x 231 = 32,304,420

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


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