Q: What are the prime factors of the number 440,432,454?

 A: 2, 3, 7, 11, 29, 71, 463

Why are those the prime factors of the number 440,432,454?

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 440,432,454

440,432,454
Factor Arrows
2220,216,227
Factor Arrows
373,405,409
Factor Arrows
710,486,487
Factor Arrows
11953,317
Factor Arrows
2932,873
Factor Arrows
71463

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, 7, 11, 29, 71, 463

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 11 x 29 x 71 x 463 = 440,432,454

This can also be written as 21 x 31 x 71 x 111 x 291 x 711 x 4631 = 440,432,454

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


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