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Does some standard Python module contain a function to compute modular multiplicative inverse of a number, i.e. a number y = invmod(x, p) such that x*y == 1 (mod p)? Google doesn't seem to give any good hints on this.
'sympy' package api 'sqMatrix.inv_mod(mod)' computes modulo matrix inverse for small and arbitrarily large modulus. By combining sympy with numpy, it becomes easy to compute modulo inverse of 2-D numpy arrays (see the code snippet below):
2 lut 2024 · This article explores how to calculate the modular multiplicative inverse in Python using the Naive Iterative Approach, Modular Exponentiation, the Extended Euclidean Algorithm, and Fermat's Little Theorem.
1 mar 2024 · For a given square matrix A, the multiplicative inverse B satisfies the equation AB = BA = I, where I is the identity matrix. This article provides different methods to calculate this inverse matrix in Python, assuming that the matrix is invertible.
29 gru 2023 · Given two integers A and M, find the modular multiplicative inverse of A under modulo M. The modular multiplicative inverse is an integer X such that: A X ? 1 (mod M)
Learn how to calculate MMI (modular multiplicative inverse) in Python . We can use naive method and Fermat's little theorem.
This will imply that $(322y\equiv1)\pmod {701}$, i.e. the multiplicative inverse of 322 is $y$, when the modulus is $701$. I've put square brackets around the numbers found to be REMAINDERS but NOT around the QUOTIENTS.
