Q: What are the prime factors of the number 18,334,620?

 A: 2, 3, 5, 19, 1787

Why are those the prime factors of the number 18,334,620?

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 18,334,620

18,334,620
Factor Arrows
29,167,310
Factor Arrows
24,583,655
Factor Arrows
31,527,885
Factor Arrows
3509,295
Factor Arrows
3169,765
Factor Arrows
533,953
Factor Arrows
191,787

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, 19, 1787

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 5 x 19 x 1,787 = 18,334,620

This can also be written as 22 x 33 x 51 x 191 x 1,7871 = 18,334,620

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


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