Q: What are the prime factors of the number 21,823,392?

 A: 2, 3, 59, 3853

Why are those the prime factors of the number 21,823,392?

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 21,823,392

21,823,392
Factor Arrows
210,911,696
Factor Arrows
25,455,848
Factor Arrows
22,727,924
Factor Arrows
21,363,962
Factor Arrows
2681,981
Factor Arrows
3227,327
Factor Arrows
593,853

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, 59, 3853

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 59 x 3,853 = 21,823,392

This can also be written as 25 x 31 x 591 x 3,8531 = 21,823,392

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


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