PYTHON bcpowmod

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Python replacement for PHP's bcpowmod [ edit | history ]
As per example:
print pow(x, y, modulus)

If you want to take a string, like bcpowmod() in PHP:
print pow(int(x), int(y), int(modulus))

PHP bcpowmod

PHP original manual for bcpowmod [ show | ]


(PHP 5)

bcpowmodRaise an arbitrary precision number to another, reduced by a specified modulus


string bcpowmod ( string $left_operand , string $right_operand , string $modulus [, int $scale ] )

Use the fast-exponentiation method to raise left_operand to the power right_operand with respect to the modulus modulus .



The left operand, as a string.


The right operand, as a string.


The modulus, as a string.


This optional parameter is used to set the number of digits after the decimal place in the result. You can also set the global default scale for all functions by using bcscale().

Return Values

Returns the result as a string, or NULL if modulus is 0.


Note: Because this method uses the modulus operation, non-natural numbers may give unexpected results. A natural number is any positive non-zero integer.


The following two statements are functionally identical. The bcpowmod() version however, executes in less time and can accept larger parameters.


$b bcmod(bcpow($x$y), $mod);

// $a and $b are equal to each other.


See Also

  • bcpow() - Raise an arbitrary precision number to another
  • bcmod() - Get modulus of an arbitrary precision number