project euler 3. problem

def IntFacto(mod):
    
    result = 1
    i =1 
    while i<mod:
        if mod % i ==0:
            modCnt=0
            for j in range(1, i+1):
                
                if i%j==0:
                    modCnt+=1
                else:
                    continue
            if modCnt==2:
                print "mod : %d" % i
                result *= i
                print "result : %d" % result
            elif result == mod:
                break
        i+=1
 
IntFacto(600851475143)