CypherCalc can perform some statistical tests on numbers to help evaluate their randomness. Simply enter the number to be checked in the "Number to Check" box.  You can type the number, or paste it from another CypherCalc window, or another application. CypherCalc will perform the following checks and display the results:
 

• Number of bits: the total bit length of the number under test. Each hex digit is considered to be four bits.

• Number of ones: the number of binary ones in the number under test. Also displayed as a percentage of the total Number of bits.

• Number of zeroes: the number of binary zeroes in the number under test. Also displayed as a percentage of the total Number of bits.

• Longest run of ones: the length in bits of the longest uninterrupted run of binary ones in the number under test.

• Longest run of zeroes: the length in bits of the longest uninterrupted run of binary zeroes in the number under test.

• Longest run of 01 alternations: the length in bit pairs of the longest uninterrupted run of 01 alternations in the number under test. For example, the run "010101" would be displayed as 3 alternations (6 bits).

• Longest run of 10 alternations: the length in bit pairs of the longest uninterrupted run of 10 alternations in the number under test. For example, the run "1010" would be displayed as 2 alternations (4 bits).