The product of three consecutive natural numbers must be a multiple of 2 and 3. (right)

The multiple of any natural number must be greater than the factor of this number. (error)

Among natural numbers, no other prime number is even except 2. (right)

Infinite decimals are cyclic decimals. (error)

Natural numbers are either odd or even, or composite or prime. (error)

Two numbers whose common factor is 1 are called prime numbers. (error)