Mathlean · Online math workspace
Modular exponentiation calculator
Calculate an integer power modulo a modulus without expanding the full power.
How to use this calculator
Edit PowerMod(base, exponent, modulus). The starter computes 2 to the tenth power modulo 7.
Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.
Try it here
Interactive tools require JavaScript. You can read the guide and example without it.
What to know
Modular negative powers require invertibility; do not confuse modular arithmetic with decimal remainders.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.