Q: What are the prime factors of the number 23,156,416?

 A: 2, 181, 1999

Why are those the prime factors of the number 23,156,416?

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 23,156,416

23,156,416
Factor Arrows
211,578,208
Factor Arrows
25,789,104
Factor Arrows
22,894,552
Factor Arrows
21,447,276
Factor Arrows
2723,638
Factor Arrows
2361,819
Factor Arrows
1811,999

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, 181, 1999

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 181 x 1,999 = 23,156,416

This can also be written as 26 x 1811 x 1,9991 = 23,156,416

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


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