Q: What are the prime factors of the number 512,402,100?

 A: 2, 3, 5, 7, 17, 31, 463

Why are those the prime factors of the number 512,402,100?

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 512,402,100

512,402,100
Factor Arrows
2256,201,050
Factor Arrows
2128,100,525
Factor Arrows
342,700,175
Factor Arrows
58,540,035
Factor Arrows
51,708,007
Factor Arrows
7244,001
Factor Arrows
1714,353
Factor Arrows
31463

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, 7, 17, 31, 463

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 7 x 17 x 31 x 463 = 512,402,100

This can also be written as 22 x 31 x 52 x 71 x 171 x 311 x 4631 = 512,402,100

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


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