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How many prime numbers does 20 have?

Updated: 8/21/2019
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7y ago

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20 has two prime factors which are 2 and 5

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Q: How many prime numbers does 20 have?
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How many prime numbers are there between 10 and 20?

There are 4 prime numbers between 10 and 20. They are 11, 13, 17, and 19.


How many prime numbers are there betwen 20 and 40?

There are four prime numbers in this range, specifically 23, 29, 31 and 37.