Q: What are the prime factors of the number 464,268,420?

 A: 2, 3, 5, 7, 11, 19, 41, 43

Why are those the prime factors of the number 464,268,420?

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 464,268,420

464,268,420
Factor Arrows
2232,134,210
Factor Arrows
2116,067,105
Factor Arrows
338,689,035
Factor Arrows
312,896,345
Factor Arrows
52,579,269
Factor Arrows
7368,467
Factor Arrows
1133,497
Factor Arrows
191,763
Factor Arrows
4143

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, 11, 19, 41, 43

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 7 x 11 x 19 x 41 x 43 = 464,268,420

This can also be written as 22 x 32 x 51 x 71 x 111 x 191 x 411 x 431 = 464,268,420

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


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