Q: What are the prime factors of the number 54,215,040?

 A: 2, 3, 5, 11, 17, 151

Why are those the prime factors of the number 54,215,040?

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 54,215,040

54,215,040
Factor Arrows
227,107,520
Factor Arrows
213,553,760
Factor Arrows
26,776,880
Factor Arrows
23,388,440
Factor Arrows
21,694,220
Factor Arrows
2847,110
Factor Arrows
2423,555
Factor Arrows
3141,185
Factor Arrows
528,237
Factor Arrows
112,567
Factor Arrows
17151

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, 11, 17, 151

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 2 x 3 x 5 x 11 x 17 x 151 = 54,215,040

This can also be written as 27 x 31 x 51 x 111 x 171 x 1511 = 54,215,040

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


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