30 lines
508 B
Python
30 lines
508 B
Python
#!/usr/bin/env python3
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from lib import primegen
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from math import log
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def maxpw(n, logN):
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return int(logN / log(n))
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def M(p, q, logN):
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return max(q**pw * p**maxpw(p, logN - pw*log(q))
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for pw in range(1, maxpw(q, logN - log(p))+1)
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)
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N = 10**7
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logN = log(N)
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primes = list(primegen(N//2+1))
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s = 0
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for i, p in enumerate(primes):
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if p > int(N**0.5):
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break
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for q in primes[i+1:]:
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if p*q > N:
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break
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s += M(p, q, logN)
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print(s)
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