(PHP 5, PHP 7 >= 5.2.0) Find next prime number

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Clear bit void

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Add numbers

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Exact division of numbers

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Raise number into power

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Convert GMP number to string

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Scan for 0

(PHP 5, PHP 7 >= 5.6.0) Take the integer part of nth root

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Sign of number

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Convert GMP number to integer