90=2*45
90=2*5*9
90=2*5*3*3
90=2*3^2*5
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90 is composite, 117 is prime.
89 and 91 are both prime numbers, so when asked the prime number closest to 90, the answer is that 90 is surrounded by two prime numbers
Yes, 90 and 91 are relatively prime. Any consecutive integers will be relatively prime.
90 has three prime factors: 2, 3 and 5.
The prime factors are: 2 3 5