Q: What are the prime factors of the number 152,455,520?

 A: 2, 5, 7, 31, 4391

Why are those the prime factors of the number 152,455,520?

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 152,455,520

152,455,520
Factor Arrows
276,227,760
Factor Arrows
238,113,880
Factor Arrows
219,056,940
Factor Arrows
29,528,470
Factor Arrows
24,764,235
Factor Arrows
5952,847
Factor Arrows
7136,121
Factor Arrows
314,391

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, 31, 4391

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 31 x 4,391 = 152,455,520

This can also be written as 25 x 51 x 71 x 311 x 4,3911 = 152,455,520

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


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