Q: What are the prime factors of the number 53,161,152?

 A: 2, 3, 11, 25171

Why are those the prime factors of the number 53,161,152?

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 53,161,152

53,161,152
Factor Arrows
226,580,576
Factor Arrows
213,290,288
Factor Arrows
26,645,144
Factor Arrows
23,322,572
Factor Arrows
21,661,286
Factor Arrows
2830,643
Factor Arrows
3276,881
Factor Arrows
1125,171

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, 11, 25171

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 3 x 11 x 25,171 = 53,161,152

This can also be written as 26 x 31 x 111 x 25,1711 = 53,161,152

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


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