Q: What are the prime factors of the number 258,476,000?

 A: 2, 5, 19, 179

Why are those the prime factors of the number 258,476,000?

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 258,476,000

258,476,000
Factor Arrows
2129,238,000
Factor Arrows
264,619,000
Factor Arrows
232,309,500
Factor Arrows
216,154,750
Factor Arrows
28,077,375
Factor Arrows
51,615,475
Factor Arrows
5323,095
Factor Arrows
564,619
Factor Arrows
193,401
Factor Arrows
19179

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, 5, 19, 179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 5 x 19 x 19 x 179 = 258,476,000

This can also be written as 25 x 53 x 192 x 1791 = 258,476,000

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


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