6925
Math
Calculate the factorial using Stirling's formula.
The calculator calculates the approximate value of the motor using Stirling's formula
94903
Information technology
Caesar cipher
Calculator specified key encrypts the text using the Caesar cipher. Are accepted only letters, other characters are ignored.
18392
Savings
Calculate how much you spend on cigarettes
Calculator helps you calculate the annual expenditure on cigarettes.
21159
Math
Number cheerful
Checks the calculator is a large number of so-called gay (Happy Number). Number gay is a natural number is defined as follows: Calculate the sum of squares of digits of the number. Repeat this process for the next results as long as we get the number 1 or the results will be repeated. If you have received as a result of one, the original number is the number of gay. Otherwise, a number bleak.