Q: What are the prime factors of the number 22,781,856?

 A: 2, 3, 307, 773

Why are those the prime factors of the number 22,781,856?

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 22,781,856

22,781,856
Factor Arrows
211,390,928
Factor Arrows
25,695,464
Factor Arrows
22,847,732
Factor Arrows
21,423,866
Factor Arrows
2711,933
Factor Arrows
3237,311
Factor Arrows
307773

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, 307, 773

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 307 x 773 = 22,781,856

This can also be written as 25 x 31 x 3071 x 7731 = 22,781,856

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


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