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2,3,5,7,11,13 -- There seem to be 6 of them.

A prime is a number other that 1 which has not factors except itself and 1.

4 = 2* 2 , so not prime

6 = 2* 3 , so not prime ( In fact 2 is a factor of every even number, so no even numbers but 2 itself are prime.)

9 = 3*3, so not prime

15 = 3*5, so not prime

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15y ago

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8y ago

They are: 2 3 5 7 11 and 13 which makes six of them

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Wiki User

8y ago

Six of them which are: 2 3 5 7 11 and 13

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Q: How many prime numbers are there between 1 and 15?
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