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hube12/first digit factorial.py

Last active December 29, 2020 15:44
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first digit factorial
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first digit factorial.py
def first_digit(n):
from math import exp,log,pi,modf,sqrt
w=log((n/exp(1)),10)
f,i=modf(w*n)
l=10**f
p=sqrt(2*pi*n)
return str(p*l)[0]
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