Q: What are the prime factors of the number 242,402,520?

 A: 2, 3, 5, 23, 71, 1237

Why are those the prime factors of the number 242,402,520?

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 242,402,520

242,402,520
Factor Arrows
2121,201,260
Factor Arrows
260,600,630
Factor Arrows
230,300,315
Factor Arrows
310,100,105
Factor Arrows
52,020,021
Factor Arrows
2387,827
Factor Arrows
711,237

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, 23, 71, 1237

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 23 x 71 x 1,237 = 242,402,520

This can also be written as 23 x 31 x 51 x 231 x 711 x 1,2371 = 242,402,520

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


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