Q: What are the prime factors of the number 516,258?

 A: 2, 3, 23, 29, 43

Why are those the prime factors of the number 516,258?

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 516,258

516,258
Factor Arrows
2258,129
Factor Arrows
386,043
Factor Arrows
328,681
Factor Arrows
231,247
Factor Arrows
2943

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, 23, 29, 43

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 23 x 29 x 43 = 516,258

This can also be written as 21 x 32 x 231 x 291 x 431 = 516,258

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


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