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Number Theory Calculators — Mathematics

30 free number theory calculators in mathematics. Each tool shows step-by-step formulas, worked examples, and detailed explanations to help you get accurate results instantly.

All Number Theory Calculators

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Abundant Number Checker

Calculate abundant number checker with inputs, formulas, and instant results.

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Bell Numbers Calculator

Calculate bell numbers with inputs, formulas, and instant results.

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Bezout Identity Calculator

Calculate bezout identity with inputs, formulas, and instant results.

Binary Calculator - Operations

binary calculator. Get instant, accurate results.

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Catalan Number Calculator

Calculate the nth Catalan number with applications to counting problems.

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Catalan Numbers Calculator

Calculate catalan numbers with inputs, formulas, and instant results.

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Deficient Number Checker

Calculate deficient number checker with inputs, formulas, and instant results.

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Divisibility Calculator

Check divisibility of a number by 2 through 12 and find all factors.

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Divisor Function Calculator

Calculate divisor function with inputs, formulas, and instant results.

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Euler Totient Calculator

Calculate Euler totient function for any positive integer with prime factorization.

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Eulers Totient Function Calculator

Calculate eulers totient function with inputs, formulas, and instant results.

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Extended Euclidean Algorithm Calculator

Calculate extended euclidean algorithm with inputs, formulas, and instant results.

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Factorization Visualizer Calculator

Calculate factorization visualizer with inputs, formulas, and instant results.

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Fibonacci Closed Form Calculator

Calculate fibonacci closed form with inputs, formulas, and instant results.

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GCF Gcd Calculator

gcf/gcd calculator. Get instant, accurate results.

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Graph Theory Calculator

Calculate properties of graphs including degree, adjacency matrix, and shortest paths.

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Greatest Common Factor Calculator

Find the GCF (GCD) of two or more numbers using prime factorization and Euclidean algorithm.

Hexadecimal Calculator - Operations

hexadecimal calculator. Get instant, accurate results.

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Least Common Multiple Calculator

Find the LCM of two or more numbers using prime factorization and the GCF method.

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Mersenne Prime Finder

Calculate mersenne prime finder with inputs, formulas, and instant results.

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Miller Rabin Primality Test Calculator

Test if large numbers are prime using the Miller-Rabin probabilistic primality test.

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Modular Arithmetic Calculator

Perform modular arithmetic operations including modular exponentiation and inverse.

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Modular Arithmetic Visualizer Calculator

Calculate modular arithmetic visualizer with inputs, formulas, and instant results.

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Partition Function Calculator

Calculate partition function with inputs, formulas, and instant results.

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Pascal Triangle Calculator

Generate rows of Pascal triangle and find specific binomial coefficients.

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Pascals Triangle Calculator

Calculate pascals triangle with inputs, formulas, and instant results.

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Perfect Number Checker

Calculate perfect number checker with inputs, formulas, and instant results.

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Prime Counting Function Calculator

Calculate prime counting function with inputs, formulas, and instant results.

Set Operations Calculator

Perform union, intersection, difference, and complement operations on sets.

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Stirling Number Calculator

Calculate Stirling numbers of the first and second kind for combinatorial problems.

About Number Theory Calculators

Our number theory calculators in mathematics are designed for students, professionals, and anyone who needs quick, accurate results. Every calculator includes the underlying formula, step-by-step solutions, and real-world worked examples so you can understand the math behind the answer.

Whether you need to solve a one-time problem or verify your own calculations, these free tools cover the most common number theory scenarios. All results are computed in your browser — no data is sent to any server.

What You Can Calculate

This section includes 30 tools: Abundant Number Checker, Bell Numbers Calculator, Bezout Identity Calculator, Binary Calculator - Operations, Catalan Number Calculator, Catalan Numbers Calculator, Deficient Number Checker, Divisibility Calculator, and 22 more. Each calculator is free to use with no signup required.