Recently, faced with an increasing number of different numbers used in many industries. This application helps you to orientate. The application includes the following categories: Numbers: Numbers in Greek, important phone numbers, constant symbols, constants of mathematics and physics, numerological numbers, postal codes (ZIP), country code, prime numbers, area code, shoe size, basic math sets Symbols: chemical nomenclature, chemical hazard symbols, HTML codes & tags, Morse, Roman numerals, sy