Q: What are the prime factors of the number 254,503,656?

 A: 2, 3, 11, 131, 223

Why are those the prime factors of the number 254,503,656?

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 254,503,656

254,503,656
Factor Arrows
2127,251,828
Factor Arrows
263,625,914
Factor Arrows
231,812,957
Factor Arrows
310,604,319
Factor Arrows
33,534,773
Factor Arrows
11321,343
Factor Arrows
1129,213
Factor Arrows
131223

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, 11, 131, 223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 11 x 11 x 131 x 223 = 254,503,656

This can also be written as 23 x 32 x 112 x 1311 x 2231 = 254,503,656

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


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