Q: What are the prime factors of the number 53,221,888?

 A: 2, 19, 5471

Why are those the prime factors of the number 53,221,888?

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 53,221,888

53,221,888
Factor Arrows
226,610,944
Factor Arrows
213,305,472
Factor Arrows
26,652,736
Factor Arrows
23,326,368
Factor Arrows
21,663,184
Factor Arrows
2831,592
Factor Arrows
2415,796
Factor Arrows
2207,898
Factor Arrows
2103,949
Factor Arrows
195,471

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, 19, 5471

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 2 x 2 x 19 x 5,471 = 53,221,888

This can also be written as 29 x 191 x 5,4711 = 53,221,888

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


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