code displayed in ex machina

exmachina.py

def sieve(n):
    x = [1]*n
    x[1] = 0
    for i in range(2, n/2):
        j = 2*i
        while j<n:
            x[j] = 0
            j = j+i
    return x

def prime(n, x):
    i = 1
    j = 1
    while j <= n:
        if x[i] == 1:
            j = j+1
        i = i+1

    return i-1

x =sieve(10000)

code = [1206,301,384,5]
key = [1,1,2,2]

print "".join(chr(i) for i in [73,83,66,78,32,61,32]),

for i in range(0, 4):
    print str(prime(code[i],x)-key[i]),
print