2 is a Prime number, but since 4 is divisible by 2, then 4 is not prime.
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2 is prime 4 is not prime
No. The prime factorization of 256 is 2*2*2*2*2*2*2*2 or 2^8. 4 is not prime.
2 is prime.
2 is the only prime factor of 4.
2 and 2. Prime factors needn't be distinct. Powers of the primes have only this prime as factor and 4 is a power of 2.