My Windows Azure workload in Python! http://maurostorch.cloudapp.net/prime

prime.py

import sys
from time import gmtime, strftime
from math import sqrt

def isprimo(p):
	i=long(sqrt(p))
	while True:
		if p%i==0: return False
		if i<=2: break
		i = i - 1
	return True

def main():
	start = long(sys.argv[1])
	stime= 'Starting from '+str(start)+' '+strftime("at %a, %d %b %Y %H:%M:%S +0000\n", gmtime())
	while True:
		if isprimo(start):
			f = open('last','w')
			f.write(stime)
			f.write(str(start)+' at +'+strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())+'\n')
			f.close()
		start = start + 1
main()