Q: What are the prime factors of the number 162,631,560?

 A: 2, 3, 5, 7, 13, 53, 281

Why are those the prime factors of the number 162,631,560?

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 162,631,560

162,631,560
Factor Arrows
281,315,780
Factor Arrows
240,657,890
Factor Arrows
220,328,945
Factor Arrows
36,776,315
Factor Arrows
51,355,263
Factor Arrows
7193,609
Factor Arrows
1314,893
Factor Arrows
53281

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, 7, 13, 53, 281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 7 x 13 x 53 x 281 = 162,631,560

This can also be written as 23 x 31 x 51 x 71 x 131 x 531 x 2811 = 162,631,560

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


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