This program is slow, optimize it.

counter.py

#!/usr/bin/env python

number_range = range(1, 21)



def count():
    number = 21
    while True:
        for n in number_range:
            if number % n == 0:
                if n == 20:
                    print number
                    return                    
                else:
                    continue
            else:
                number+=1
                break

count()

# $ time python counter.py
# 232792560

# real    1m3.392s
# user    1m3.294s
# sys 0m0.028s
# $ time pypy counter.py
# 232792560

# real    0m8.720s
# user    0m8.694s
# sys 0m0.022s