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The prime numbers between 1 and 20 are:

2, 3, 5, 7, 11, 13, 17 and 19.

Note that a Prime number has only two factors, 1 and itself and one. Number 1 is not considered to be a prime number because it has only one factor.

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13y ago
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Artu Gonza

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4y ago

between 1 and 20

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Q: What are the prime numbers from 1 to 20?
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