Q: What are the prime factors of the number 1,403,325?

 A: 3, 5, 7, 11

Why are those the prime factors of the number 1,403,325?

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 1,403,325

1,403,325
Factor Arrows
3467,775
Factor Arrows
3155,925
Factor Arrows
351,975
Factor Arrows
317,325
Factor Arrows
35,775
Factor Arrows
31,925
Factor Arrows
5385
Factor Arrows
577
Factor Arrows
711

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:

3, 5, 7, 11

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 5 x 5 x 7 x 11 = 1,403,325

This can also be written as 36 x 52 x 71 x 111 = 1,403,325

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


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