Q: What are the prime factors of the number 1,549,152?

 A: 2, 3, 11, 163

Why are those the prime factors of the number 1,549,152?

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 1,549,152

1,549,152
Factor Arrows
2774,576
Factor Arrows
2387,288
Factor Arrows
2193,644
Factor Arrows
296,822
Factor Arrows
248,411
Factor Arrows
316,137
Factor Arrows
35,379
Factor Arrows
31,793
Factor Arrows
11163

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, 163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 11 x 163 = 1,549,152

This can also be written as 25 x 33 x 111 x 1631 = 1,549,152

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


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