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Diffstat (limited to '069_2.py')
| -rw-r--r-- | 069_2.py | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/069_2.py b/069_2.py new file mode 100644 index 0000000..c00483b --- /dev/null +++ b/069_2.py @@ -0,0 +1,22 @@ +# +# n/phi(n) is a maximum, if phi(n) is minimal +# +# phi(n) = n*(1-1/p1)*(1-1/p2)*...*(1-1/pi) +# n/phi(n) = 1/((1-1/p1)*(1-1/p2)*...*(1-1/pi)) +# -> smallest primes +# + +from common import sieve + +primes = sieve(100).primes() +prime_list = [ x for x in primes ] +prime_list.sort() + +x = 1 +for p in prime_list: + if x*p > 1000000: + break + x *= p + +print x + |
