Q: What are the prime factors of the number 242,195,616?

 A: 2, 3, 13, 21563

Why are those the prime factors of the number 242,195,616?

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 242,195,616

242,195,616
Factor Arrows
2121,097,808
Factor Arrows
260,548,904
Factor Arrows
230,274,452
Factor Arrows
215,137,226
Factor Arrows
27,568,613
Factor Arrows
32,522,871
Factor Arrows
3840,957
Factor Arrows
3280,319
Factor Arrows
1321,563

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, 13, 21563

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 13 x 21,563 = 242,195,616

This can also be written as 25 x 33 x 131 x 21,5631 = 242,195,616

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


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