'''The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number 600851475143 ?''' def largestprimefactor(a): i = 2 primefactors = [] while i * i <= a: if a % i: i += 1 else: a //= i return a print getprimefactors(600851475143)
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