Q: What are the prime factors of the number 254,430,000?

 A: 2, 3, 5, 11, 257

Why are those the prime factors of the number 254,430,000?

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 254,430,000

254,430,000
Factor Arrows
2127,215,000
Factor Arrows
263,607,500
Factor Arrows
231,803,750
Factor Arrows
215,901,875
Factor Arrows
35,300,625
Factor Arrows
31,766,875
Factor Arrows
5353,375
Factor Arrows
570,675
Factor Arrows
514,135
Factor Arrows
52,827
Factor Arrows
11257

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, 11, 257

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 5 x 5 x 5 x 5 x 11 x 257 = 254,430,000

This can also be written as 24 x 32 x 54 x 111 x 2571 = 254,430,000

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


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