Q: What are the prime factors of the number 258,460,890?

 A: 2, 3, 5, 23, 167, 2243

Why are those the prime factors of the number 258,460,890?

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 258,460,890

258,460,890
Factor Arrows
2129,230,445
Factor Arrows
343,076,815
Factor Arrows
58,615,363
Factor Arrows
23374,581
Factor Arrows
1672,243

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, 5, 23, 167, 2243

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 23 x 167 x 2,243 = 258,460,890

This can also be written as 21 x 31 x 51 x 231 x 1671 x 2,2431 = 258,460,890

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


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