Q: What are the prime factors of the number 254,234,440?

 A: 2, 5, 19, 41, 199

Why are those the prime factors of the number 254,234,440?

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 254,234,440

254,234,440
Factor Arrows
2127,117,220
Factor Arrows
263,558,610
Factor Arrows
231,779,305
Factor Arrows
56,355,861
Factor Arrows
19334,519
Factor Arrows
418,159
Factor Arrows
41199

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, 41, 199

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 19 x 41 x 41 x 199 = 254,234,440

This can also be written as 23 x 51 x 191 x 412 x 1991 = 254,234,440

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


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