# Prime decomposition of 991

Here you can find the answer to questions related to: Prime decomposition of 991 or list the factors of 991. By using our online calculator to find the prime factors of any composite number and check if a number is prime or composite. This tool also draws the prime factor tree if the number is factorable and smaller than 16000.

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## What is prime number? How to factorize a number?

Watch this video below to learn more on prime numbers, prime factors and how you can draw a factor tree.

You can also find this video about factorization at mathantics.com

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- how many factors does 991 have?