Q: What are the prime factors of the number 49,108,220?

 A: 2, 5, 7, 23, 101, 151

Why are those the prime factors of the number 49,108,220?

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 49,108,220

49,108,220
Factor Arrows
224,554,110
Factor Arrows
212,277,055
Factor Arrows
52,455,411
Factor Arrows
7350,773
Factor Arrows
2315,251
Factor Arrows
101151

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, 5, 7, 23, 101, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 23 x 101 x 151 = 49,108,220

This can also be written as 22 x 51 x 71 x 231 x 1011 x 1511 = 49,108,220

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


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