Q: What are the prime factors of the number 258,627,240?

 A: 2, 3, 5, 19, 37811

Why are those the prime factors of the number 258,627,240?

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 258,627,240

258,627,240
Factor Arrows
2129,313,620
Factor Arrows
264,656,810
Factor Arrows
232,328,405
Factor Arrows
310,776,135
Factor Arrows
33,592,045
Factor Arrows
5718,409
Factor Arrows
1937,811

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, 19, 37811

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 19 x 37,811 = 258,627,240

This can also be written as 23 x 32 x 51 x 191 x 37,8111 = 258,627,240

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


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