User:Milanandreew/Python 3 Programming/Conditional Statements/Solution
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# initialise state variables
lastPrime = 2
currentAttempt = 3
primesLeft = 999 # We already know 2 is prime
divideBy = 2
while (primesLeft>0):
isPrime = True
# square root is upper bound,
# because if the divisor is smaller than the square root, the quotient is larger
while (divideBy <= currentAttempt**(1/2)):
if currentAttempt%divideBy == 0:
isPrime = False
divideBy += 1
if isPrime == True:
# print(currentAttempt, 'is prime')
primesLeft = primesLeft - 1
lastPrime = currentAttempt
# reset state variables
currentAttempt = currentAttempt + 1
divideBy = 2
print(lastPrime, 'is the 1000th prime number')