Browse 43+ Number Theory & Discrete Math Calculators with instant results, step-by-step solutions, and mobile-friendly inputs. Pick a popular tool below or jump to a subcategory.
Popular Number Theory & Discrete Math Calculators
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Prime Numbers & Factors
14 specialized tools
Prime Calculator
Free online calculator
Prime Factorization Calculator
Free online calculator
Prime Factor Calculator
Free online calculator
Greatest Common Factor Calculator
Free online calculator
Least Common Multiple Calculator
Free online calculator
Least Common Denominator Calculator
Free online calculator
Divisibility Calculator
Free online calculator
Euler Phi Calculator
Free online calculator
Mersenne Prime Calculator
Free online calculator
Modular Exponentiation Calculator
Free online calculator
Modular Inverse Calculator
Free online calculator
Chinese Remainder Theorem Calculator
Free online calculator
Extended Euclidean Algorithm Calculator
Free online calculator
Divisor Function Calculator
Free online calculator
Number Properties
11 specialized tools
Even Odd Calculator
Free online calculator
Perfect Number Calculator
Free online calculator
Perfect Square Calculator
Free online calculator
Composite Number Calculator
Free online calculator
Armstrong Number Calculator
Free online calculator
Palindrome Calculator
Free online calculator
Fibonacci Number Calculator
Free online calculator
Collatz Conjecture Calculator
Free online calculator
Triangular Number Calculator
Free online calculator
Abundant Number Calculator
Free online calculator
Amicable Numbers Calculator
Free online calculator
Discrete Mathematics
18 specialized tools
Logic Calculator
Free online calculator
Truth Table Calculator
Free online calculator
Boolean Algebra Calculator
Free online calculator
Set Calculator
Free online calculator
Venn Diagram Calculator
Free online calculator
Graph Theory Calculator
Free online calculator
Combinatorics Calculator
Free online calculator
Recurrence Relation Calculator
Free online calculator
Generating Function Calculator
Free online calculator
Boolean Algebra Simplifier
Free online calculator
Boolean Expression Solver
Free online calculator
Logic Gate Simplifier
Free online calculator
Number Base Converter
Free online calculator
Catalan Number Calculator
Free online calculator
Stirling Number Calculator
Free online calculator
Bell Number Calculator
Free online calculator
Derangement Calculator
Free online calculator
Integer Partition Calculator
Free online calculator
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About Number Theory & Discrete Math Calculators
Discrete math underpins computer science, cryptography, and logic — and our Number Theory & Discrete Math Calculators make these abstract topics concrete. With 43 free tools, this is the highest-traffic category on the site. The Boolean Algebra Calculator alone draws tens of thousands of searches monthly, simplifying logic expressions for digital design and CS coursework.
Solving recurrence relations? The Recurrence Relation Calculator finds closed-form solutions automatically. Explore sets with the Set Calculator, check special numbers with the Perfect Number Calculator and Armstrong Number Calculator, or dive into combinatorics with the Generating Function Calculator and Euler Phi Calculator.
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Most Popular Number Theory & Discrete Math Calculators
Get started with our most-used tools: Boolean Algebra Calculator, Recurrence Relation Calculator, Set Calculator, Perfect Number Calculator, Generating Function Calculator, Armstrong Number Calculator, and Euler Phi Calculator. Every tool runs in your browser — no sign-up required.
All 43 number theory & discrete math calculators are completely free, work on any device, and deliver results in milliseconds. Bookmark this page and come back whenever you need a quick answer.
Featured Articles
Deepen your understanding of number theory & discrete math with these guides:
How to Simplify Boolean Expressions
Simplify Boolean expressions with the eleven core algebra laws, De Morgan’s theorems and Karnaugh maps — with worked reductions and the gate counts they save.
How to Find the Pattern in a Number Sequence
Learn how to find the pattern in a number sequence using finite differences, ratio tests, and recursive rules — plus how to build the nth-term formula.
Overcoming Math Anxiety: Build Mathematical Confidence
Overcoming Math Anxiety requires understanding its roots and applying proven strategies. Learn techniques that transform mathematical fear into confidence.
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