Q: What are the prime factors of the number 146,353,664?

 A: 2, 197, 1451

Why are those the prime factors of the number 146,353,664?

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 146,353,664

146,353,664
Factor Arrows
273,176,832
Factor Arrows
236,588,416
Factor Arrows
218,294,208
Factor Arrows
29,147,104
Factor Arrows
24,573,552
Factor Arrows
22,286,776
Factor Arrows
21,143,388
Factor Arrows
2571,694
Factor Arrows
2285,847
Factor Arrows
1971,451

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, 197, 1451

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 2 x 2 x 197 x 1,451 = 146,353,664

This can also be written as 29 x 1971 x 1,4511 = 146,353,664

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


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