Q: What are the prime factors of the number 45,450,240?

 A: 2, 3, 5, 11, 269

Why are those the prime factors of the number 45,450,240?

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 45,450,240

45,450,240
Factor Arrows
222,725,120
Factor Arrows
211,362,560
Factor Arrows
25,681,280
Factor Arrows
22,840,640
Factor Arrows
21,420,320
Factor Arrows
2710,160
Factor Arrows
2355,080
Factor Arrows
2177,540
Factor Arrows
288,770
Factor Arrows
244,385
Factor Arrows
314,795
Factor Arrows
52,959
Factor Arrows
11269

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, 5, 11, 269

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 2 x 3 x 5 x 11 x 269 = 45,450,240

This can also be written as 210 x 31 x 51 x 111 x 2691 = 45,450,240

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


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