Q: What are the prime factors of the number 258,460,454?

 A: 2, 7, 31, 197, 3023

Why are those the prime factors of the number 258,460,454?

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 258,460,454

258,460,454
Factor Arrows
2129,230,227
Factor Arrows
718,461,461
Factor Arrows
31595,531
Factor Arrows
1973,023

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, 31, 197, 3023

We can check our work by multiplying all of the prime factors together: 2 x 7 x 31 x 197 x 3,023 = 258,460,454

This can also be written as 21 x 71 x 311 x 1971 x 3,0231 = 258,460,454

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


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