Q: What are the prime factors of the number 31,184,946?

 A: 2, 3, 13, 31, 1433

Why are those the prime factors of the number 31,184,946?

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 31,184,946

31,184,946
Factor Arrows
215,592,473
Factor Arrows
35,197,491
Factor Arrows
31,732,497
Factor Arrows
3577,499
Factor Arrows
1344,423
Factor Arrows
311,433

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, 13, 31, 1433

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 13 x 31 x 1,433 = 31,184,946

This can also be written as 21 x 33 x 131 x 311 x 1,4331 = 31,184,946

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


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