Q: What are the prime factors of the number 32,121,000?

 A: 2, 3, 5, 43, 83

Why are those the prime factors of the number 32,121,000?

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 32,121,000

32,121,000
Factor Arrows
216,060,500
Factor Arrows
28,030,250
Factor Arrows
24,015,125
Factor Arrows
31,338,375
Factor Arrows
3446,125
Factor Arrows
589,225
Factor Arrows
517,845
Factor Arrows
53,569
Factor Arrows
4383

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, 43, 83

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 5 x 5 x 43 x 83 = 32,121,000

This can also be written as 23 x 32 x 53 x 431 x 831 = 32,121,000

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


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