Q: What are the prime factors of the number 254,146,256?

 A: 2, 7, 13, 29, 463

Why are those the prime factors of the number 254,146,256?

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 254,146,256

254,146,256
Factor Arrows
2127,073,128
Factor Arrows
263,536,564
Factor Arrows
231,768,282
Factor Arrows
215,884,141
Factor Arrows
72,269,163
Factor Arrows
13174,551
Factor Arrows
1313,427
Factor Arrows
29463

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, 7, 13, 29, 463

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 13 x 13 x 29 x 463 = 254,146,256

This can also be written as 24 x 71 x 132 x 291 x 4631 = 254,146,256

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


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