Q: What are the prime factors of the number 503,430?

 A: 2, 3, 5, 97, 173

Why are those the prime factors of the number 503,430?

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 503,430

503,430
Factor Arrows
2251,715
Factor Arrows
383,905
Factor Arrows
516,781
Factor Arrows
97173

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, 97, 173

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 97 x 173 = 503,430

This can also be written as 21 x 31 x 51 x 971 x 1731 = 503,430

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


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