invmod

Returns a modular multiplicative inverse of a number.

Syntax

invmod(value, mod)

Parameters

• value

  A number.

• mod

  A modulus.

Return value

The modular multiplicative inverse of the value.

If the number has no modular inverse, throws RangeError.

Examples

invmod(23, 4567)

1390

invmod(64, 2)

RangeError: not invertible