Find Roots

# and pwr, such that 0<pwr<6 and root^pwr is equal to the integer entered by
# the user. If no such pair of integers exists, it should print a message to
# that effect.

rawUserNum = int(raw_input('Enter an integer: '))
userNum = abs(rawUserNum)
root = 0
pwr = 5
i = root
while i < userNum:
    j = pwr
    while j > 0:
        if i ** j == userNum:
            root = i
            pwr = j
            i = userNum
            break
        j -= 1
    i += 1

if root ** pwr == userNum:
    print ''
    print 'User entered:', userNum
    if rawUserNum < 0:
        print 'root is:', -root
        print 'pwr is:', pwr
        print str(-root) + '^' + str(pwr) + ' = ' + str(-root ** pwr) + \
              ', which is equal to the integer the user entered.'
    else:
        print 'root is:', root
        print 'pwr is:', pwr
        print str(root) + '^' + str(pwr) + ' = ' + str(root ** pwr) + \
              ', which is equal to the integer the user entered.'
else:
    print 'No such pair of integers exist, such that: 0<pwr<6 and root^pwr' \
          ' is equal to the integer enetered by the user.'