The prime numbers between 9 and 15 are 11 and 13. A Prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. In this case, 11 and 13 are the only prime numbers within the specified range as 9 is not a prime number because it has divisors other than 1 and itself, and 15 is divisible by 3 and 5 in addition to 1 and 15.
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The multiples of 9 are numbers that can be divided evenly by 9. The two prime numbers closest to a multiple of 9 are 7 and 11. Since 9 is between 7 and 11, the multiple of 9 that is in between these two prime numbers is 9 itself.
The prime numbers between 1 and 9 are 2, 3, 5, and 7.
Of that group, 19 and 37 are prime.
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