Q: What are the prime factors of the number 75,105,396?

 A: 2, 3, 23, 61, 1487

Why are those the prime factors of the number 75,105,396?

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 75,105,396

75,105,396
Factor Arrows
237,552,698
Factor Arrows
218,776,349
Factor Arrows
36,258,783
Factor Arrows
32,086,261
Factor Arrows
2390,707
Factor Arrows
611,487

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, 61, 1487

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 23 x 61 x 1,487 = 75,105,396

This can also be written as 22 x 32 x 231 x 611 x 1,4871 = 75,105,396

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


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