Q: What are the prime factors of the number 401,030,630?

 A: 2, 5, 7, 11, 13, 40063

Why are those the prime factors of the number 401,030,630?

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 401,030,630

401,030,630
Factor Arrows
2200,515,315
Factor Arrows
540,103,063
Factor Arrows
75,729,009
Factor Arrows
11520,819
Factor Arrows
1340,063

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, 7, 11, 13, 40063

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 11 x 13 x 40,063 = 401,030,630

This can also be written as 21 x 51 x 71 x 111 x 131 x 40,0631 = 401,030,630

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


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