Q: What are the prime factors of the number 162,869,220?

 A: 2, 3, 5, 29, 41, 761

Why are those the prime factors of the number 162,869,220?

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 162,869,220

162,869,220
Factor Arrows
281,434,610
Factor Arrows
240,717,305
Factor Arrows
313,572,435
Factor Arrows
34,524,145
Factor Arrows
5904,829
Factor Arrows
2931,201
Factor Arrows
41761

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, 29, 41, 761

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 29 x 41 x 761 = 162,869,220

This can also be written as 22 x 32 x 51 x 291 x 411 x 7611 = 162,869,220

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


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