Number theory courses can help you learn prime numbers, divisibility rules, modular arithmetic, and integer properties. You can build skills in problem-solving, logical reasoning, and algorithmic thinking, that support tackling complex mathematical challenges. Many courses introduce tools like Python for implementing algorithms and mathematical software for exploring number patterns, enabling you to apply your knowledge in practical situations such as cryptography and coding theory.

École Polytechnique
Skills you'll gain: Differential Equations, Advanced Mathematics, Integral Calculus, Calculus, Mathematical Theory & Analysis, Applied Mathematics, Derivatives
★ 4.8 (25) · Mixed · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Mathematical Modeling, Advanced Mathematics, Mathematical Theory & Analysis, Applied Mathematics, Algebra, Arithmetic, Graphing, Engineering Calculations
Beginner · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Combinatorics, Probability & Statistics, Data Analysis, Advanced Mathematics, Linear Algebra, Mathematics and Mathematical Modeling, Mathematical Theory & Analysis, Geometry, Applied Mathematics, Statistics, Statistical Analysis, Statistical Methods, Probability, Algorithms, Algebra, Descriptive Statistics
Beginner · Course · 1 - 4 Weeks

Skillshare
Skills you'll gain: User Interface (UI), User Interface (UI) Design, Responsive Web Design, User Interface and User Experience (UI/UX) Design, User Experience Design, Digital Design, Web Design, User Experience, Motion Graphics, Adobe XD, Interactive Design, No-Code Development, Graphic and Visual Design, Layout Design, Prototyping, Graphic Design, Design Elements And Principles, Augmented and Virtual Reality (AR/VR), Style Guides, Digital Publishing
Beginner · Course · 1 - 3 Months

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Theoretical Computer Science, Mathematics and Mathematical Modeling, Applied Mathematics, Algorithms, Cryptography, Data Management
Beginner · Course · 1 - 3 Months

Shanghai Jiao Tong University
Skills you'll gain: Combinatorics, Graph Theory, Theoretical Computer Science, Network Model, Mathematical Theory & Analysis, Advanced Mathematics, Network Analysis, Mathematics and Mathematical Modeling, Logical Reasoning, General Mathematics, Algorithms, Probability, Computer Science
★ 3.3 (203) · Intermediate · Course · 1 - 3 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Market Dynamics, Business Economics, Business, Economics, Business Operations, Supply And Demand, Operations, Business Strategy, Market Analysis, Competitive Analysis, Consumer Behaviour, Revenue Management, Entrepreneurship, Decision Making
★ 4.8 (30) · Beginner · Course · 1 - 4 Weeks

University of Amsterdam
Skills you'll gain: Computational Logic, Logical Reasoning, Deductive Reasoning, General Mathematics, Theoretical Computer Science
★ 4.4 (300) · Advanced · Course · 1 - 3 Months

Hebrew University of Jerusalem
Skills you'll gain: Calculus, Advanced Mathematics, General Mathematics, Integral Calculus, Trigonometry, Mathematical Theory & Analysis, Geometry, Mathematics and Mathematical Modeling, Algebra, Applied Mathematics, Graphing, Derivatives, Deductive Reasoning
★ 4.4 (72) · Mixed · Course · 1 - 3 Months

University of California San Diego
Skills you'll gain: Combinatorics, Probability, Probability & Statistics, Algorithms, Bayesian Statistics, Mathematical Modeling, Computational Thinking, Statistical Methods, Arithmetic, Applied Mathematics, Program Development, Python Programming
★ 4.6 (872) · Beginner · Course · 1 - 3 Months

Tecnológico de Monterrey
Skills you'll gain: Calculus, Integral Calculus, Advanced Mathematics, Graphing, Numerical Analysis, Digital pedagogy, Trigonometry, Mathematical Modeling, Mathematical Theory & Analysis, Algebra, Mathematical Software, Derivatives
★ 4.6 (724) · Mixed · Course · 3 - 6 Months

The Hong Kong University of Science and Technology
Skills you'll gain: Cryptography, Algorithms, Encryption, Theoretical Computer Science, Combinatorics, Arithmetic, Applied Mathematics, Logical Reasoning
Beginner · Course · 1 - 3 Months