Q: What are the prime factors of the number 331,516,276?

 A: 2, 7, 13, 83, 10973

Why are those the prime factors of the number 331,516,276?

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 331,516,276

331,516,276
Factor Arrows
2165,758,138
Factor Arrows
282,879,069
Factor Arrows
711,839,867
Factor Arrows
13910,759
Factor Arrows
8310,973

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, 7, 13, 83, 10973

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 13 x 83 x 10,973 = 331,516,276

This can also be written as 22 x 71 x 131 x 831 x 10,9731 = 331,516,276

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


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