47 is.
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The prime factorization in exponent form of 27 is: 33 = 27
33 is not a prime number, it's a composite number because 3 x 11 = 33.
15 21 33 35 42 45 75 77
there are 3 prime numbers in between 21 and 33... they are 23,29, 31.
3 * 11 = 33