Q: What are the prime factors of the number 243,415,452?

 A: 2, 3, 7, 17, 37, 271

Why are those the prime factors of the number 243,415,452?

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 243,415,452

243,415,452
Factor Arrows
2121,707,726
Factor Arrows
260,853,863
Factor Arrows
320,284,621
Factor Arrows
72,897,803
Factor Arrows
17170,459
Factor Arrows
1710,027
Factor Arrows
37271

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, 17, 37, 271

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 17 x 17 x 37 x 271 = 243,415,452

This can also be written as 22 x 31 x 71 x 172 x 371 x 2711 = 243,415,452

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


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