Q: What are the prime factors of the number 23,774,208?

 A: 2, 3, 71, 109

Why are those the prime factors of the number 23,774,208?

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 23,774,208

23,774,208
Factor Arrows
211,887,104
Factor Arrows
25,943,552
Factor Arrows
22,971,776
Factor Arrows
21,485,888
Factor Arrows
2742,944
Factor Arrows
2371,472
Factor Arrows
2185,736
Factor Arrows
292,868
Factor Arrows
246,434
Factor Arrows
223,217
Factor Arrows
37,739
Factor Arrows
71109

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, 71, 109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 71 x 109 = 23,774,208

This can also be written as 210 x 31 x 711 x 1091 = 23,774,208

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


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