Q: What are the prime factors of the number 542,130,240?

 A: 2, 3, 5, 23, 43, 571

Why are those the prime factors of the number 542,130,240?

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 542,130,240

542,130,240
Factor Arrows
2271,065,120
Factor Arrows
2135,532,560
Factor Arrows
267,766,280
Factor Arrows
233,883,140
Factor Arrows
216,941,570
Factor Arrows
28,470,785
Factor Arrows
32,823,595
Factor Arrows
5564,719
Factor Arrows
2324,553
Factor Arrows
43571

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, 43, 571

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 23 x 43 x 571 = 542,130,240

This can also be written as 26 x 31 x 51 x 231 x 431 x 5711 = 542,130,240

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


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