Q: What are the prime factors of the number 243,124,344?

 A: 2, 3, 17, 139, 1429

Why are those the prime factors of the number 243,124,344?

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 243,124,344

243,124,344
Factor Arrows
2121,562,172
Factor Arrows
260,781,086
Factor Arrows
230,390,543
Factor Arrows
310,130,181
Factor Arrows
33,376,727
Factor Arrows
17198,631
Factor Arrows
1391,429

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, 17, 139, 1429

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 17 x 139 x 1,429 = 243,124,344

This can also be written as 23 x 32 x 171 x 1391 x 1,4291 = 243,124,344

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


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