39 = 3 x 13
49 = 7 x 7
51 = 3 x 17
43 is prime
31 is prime
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31, 43 and 47 are prime.
31, 37, 39, 41, 43, 47, 53, 59, and 61.
31 and 61 are prime numbers. The prime numbers between 31 and 61 are 37, 41, 43, 47, 53, and 59.
They are: 41 43 and 47
There are five prime numbers: 31, 37, 41, 43, and 47.