crypto:crypto_modular_inverse/3

Documentation
- Reference manual
- Packages
  - SWI-Prolog SSL Interface
    - library(crypto): Cryptography and authentication library
      - Number theory
        
        crypto_modular_inverse/3
        
        crypto_generate_prime/3
        
        crypto_is_prime/2

Availability::- use_module(library(crypto)).(can be autoloaded)

Source

[det]crypto_modular_inverse(+X, +M, -Y)

Compute the modular multiplicative inverse of the integer X. Y is unified with an integer such that X*Y is congruent to 1 modulo M.