This is the only square in the group.
All others numbers are one less then the cube of natural numbers.
All others are prime numbers.
All others are divisible by 6.
All others are divisible by 17.
This is the only prime number in the group.
All others are squares of prime numbers.
All others are divisible by 17.
This is the only square in the group.
All others are divisible by 13.
Except '44', all are prime numbers.
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