No. 49 is divisible by 7.
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(4x - 7y)(4x + 7y)
not prime
It is not a prime.
101 is a prime number. The only factor of 101 is itself and 1.prime
Any two prime numbers will be relatively prime. Numbers are relatively prime if they do not have any prime factors in common. Prime numbers have only themselves as prime factors, so all prime numbers are relatively prime to the others.