The book contains : A method for discovering new types of n-dimensional oval shapes (two-dimensional(2D); three-dimensional(3D) and higher-dimensional). Solution of the main problem of primary(prime) numbers: by a known sequence number, to calculate the primary(prime) number corresponding to this sequence number. Extension of the partial analysis, developed in Part 8 of my book : The Formula of Number Pi. A method for converting large positive integers from a decimal numeral system to binary,quaternary,octal and hexadecimal numeral systems, and back to decimal numeral system. Elements quantity enumeration of the underlying sets and calculation of the sum and product of these elements. The underlying sets are as follows : of the natural numbers; of the integers; of the rational numbers; of the irrational numbers; of the real numbers; of the complex numbers; of the primary(prime) numbers; of the Fibonacci sequence numbers.