Q: What are the prime factors of the number 542,402,040?

 A: 2, 3, 5, 31, 145807

Why are those the prime factors of the number 542,402,040?

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 542,402,040

542,402,040
Factor Arrows
2271,201,020
Factor Arrows
2135,600,510
Factor Arrows
267,800,255
Factor Arrows
322,600,085
Factor Arrows
54,520,017
Factor Arrows
31145,807

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, 31, 145807

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 31 x 145,807 = 542,402,040

This can also be written as 23 x 31 x 51 x 311 x 145,8071 = 542,402,040

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


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