Q: What are the prime factors of the number 228,521,491?

 A: 11, 23, 31, 29137

Why are those the prime factors of the number 228,521,491?

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 228,521,491

228,521,491
Factor Arrows
1120,774,681
Factor Arrows
23903,247
Factor Arrows
3129,137

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:

11, 23, 31, 29137

We can check our work by multiplying all of the prime factors together: 11 x 23 x 31 x 29,137 = 228,521,491

This can also be written as 111 x 231 x 311 x 29,1371 = 228,521,491

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


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