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Anonymous
45 = 32*5
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It is: 3^2 times 5 = 45
prime factorization of 4545 = 3 * 1515 = 3 * 5so prime factors are 3,3,5
45 = 32 x 5
3 is one of the prime numbers of 45.
73 is a prime number, but 45 is not a prime number.