Q: What are the prime factors of the number 45,525,376?

 A: 2, 13, 109, 251

Why are those the prime factors of the number 45,525,376?

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 45,525,376

45,525,376
Factor Arrows
222,762,688
Factor Arrows
211,381,344
Factor Arrows
25,690,672
Factor Arrows
22,845,336
Factor Arrows
21,422,668
Factor Arrows
2711,334
Factor Arrows
2355,667
Factor Arrows
1327,359
Factor Arrows
109251

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, 13, 109, 251

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 13 x 109 x 251 = 45,525,376

This can also be written as 27 x 131 x 1091 x 2511 = 45,525,376

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


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