Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Number Theory
Modular Arithmetic Calculator
Compute modular addition, subtraction, and multiplication instantly. Use it in cryptography, competitive programming, or number theory to keep results within a fixed range.
Fill in the required fields to see your result.
Number Theory
Quadratic Residues Calculator
Computes the Legendre symbol (a/p) for any integer a and odd prime p, classifying a as a quadratic residue (+1), non-residue (−1), or zero (0). Useful for modular arithmetic and cryptographic analysis.
Fill in the required fields to see your result.
Key differences
| Modular Arithmetic Calculator | Quadratic Residues Calculator | |
|---|---|---|
| Category | Number Theory | Number Theory |
| Inputs required | 3 | 2 |
| Result | (A + B) mod M | Legendre Symbol |
| What it does | Compute modular addition, subtraction, and multiplication instantly. Use it in cryptography, competitive programming, or number theory to keep results within a fixed range. | Computes the Legendre symbol (a/p) for any integer a and odd prime p, classifying a as a quadratic residue (+1), non-residue (−1), or zero (0). Useful for modular arithmetic and cryptographic analysis. |