Q: What are the prime factors of the number 45,141,456?

 A: 2, 3, 23, 31, 1319

Why are those the prime factors of the number 45,141,456?

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 45,141,456

45,141,456
Factor Arrows
222,570,728
Factor Arrows
211,285,364
Factor Arrows
25,642,682
Factor Arrows
22,821,341
Factor Arrows
3940,447
Factor Arrows
2340,889
Factor Arrows
311,319

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, 23, 31, 1319

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 23 x 31 x 1,319 = 45,141,456

This can also be written as 24 x 31 x 231 x 311 x 1,3191 = 45,141,456

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


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