Q: What are the prime factors of the number 1,977,408?

 A: 2, 3, 3433

Why are those the prime factors of the number 1,977,408?

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 1,977,408

1,977,408
Factor Arrows
2988,704
Factor Arrows
2494,352
Factor Arrows
2247,176
Factor Arrows
2123,588
Factor Arrows
261,794
Factor Arrows
230,897
Factor Arrows
310,299
Factor Arrows
33,433

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, 3433

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 3 x 3 x 3,433 = 1,977,408

This can also be written as 26 x 32 x 3,4331 = 1,977,408

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


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