3 The name of the language, by the design of the challenge, is quite important
source | link

Python 3, 59 bytes

Now uses input() instead of command line arguments. Thanks to @Beta Decay

n=int(input())
print([i for i in range(1,n)if n%i==0]==[1])

Python, 59 bytes

Now uses input() instead of command line arguments. Thanks to @Beta Decay

n=int(input())
print([i for i in range(1,n)if n%i==0]==[1])

Python 3, 59 bytes

Now uses input() instead of command line arguments. Thanks to @Beta Decay

n=int(input())
print([i for i in range(1,n)if n%i==0]==[1])
2 use input()
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Python, 7459 bytes

Now uses input() instead of command line arguments. Thanks to @Beta Decay

import sys
n=int(sys.argv[1]input())
print([i for i in range(1,n)if n%i==0]==[1])

Python, 74 bytes

import sys
n=int(sys.argv[1])
print([i for i in range(1,n)if n%i==0]==[1])

Python, 59 bytes

Now uses input() instead of command line arguments. Thanks to @Beta Decay

n=int(input())
print([i for i in range(1,n)if n%i==0]==[1])
1
source | link

Python, 74 bytes

import sys
n=int(sys.argv[1])
print([i for i in range(1,n)if n%i==0]==[1])