832 
From the well-known proposition ') that the number of prime 
numbers <.« and congruent to / with regard to the modulus #, is 
equal to 
2 ai cea) a 
P =/ 
ensues 
ee e= = 1 
u 
pm 5 en - = 
v Pp <= Ee) 
pr—l a Ke 
OS © 39 Fay ey Sb 
= p> 1 
i 
“# m 
es r<(“) 
P == Zp 
1 
a \i v m 
b | 1 v v 
me Ton BEE ak 78 
a \m x \m )? 
log | — log | — 
(ij 
1 
= bm ef 0 em 
ES 
log — log = 
PEPR log v 
log ~ Bs. log x . log ~ 
log v 
nhs ee FS x ar ITE a)? 
therefore 
1) E. Lanpav, Handbuch der Lehre von der Verteilung der Primzahlen, 1. p. 468, 
