On the counting function of semiprimes

A semiprime is a natural number which can be written as the product of two primes. The asymptotic behaviour of the function $\pi_2(x)$, the number of semiprimes less than or equal to $x$, is studied. Using a combinatorial argument, asymptotic series of $\pi_2(x)$ is determined, with all the terms ex...

Full description

Bibliographic Details
Main Authors: Crişan, D, Erban, R
Format: Journal article
Language:English
Published: Colgate University, Charles University and DIMATIA 2021