Project Euler # 3 "Maximum Prime Factors" in Python

Problem 3 "Maximum prime factor"

The prime factors of 13195 are 5, 7, 13, 29. Find the largest of the prime factors of 600851475143.

Python


target = 600851475143

x = target
i = 2
prime_factors = []
while x > 1:
  if x % i == 0:
    prime_factors.append(i)
    x = x / i
  else:
    i += 1

result = max(prime_factors)
print result
print result == 6857
print prime_factors

result


6857
True
[71, 839, 1471, 6857]

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