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.

Columbia University
Skills you'll gain: Reinforcement Learning, Artificial Intelligence and Machine Learning (AI/ML), Machine Learning, Algorithms, Markov Model, Deep Learning, Data-Driven Decision-Making, Decision Support Systems, Simulations, Probability Distribution, Statistical Methods
Intermediate · Course · 1 - 3 Months

Universiteit Leiden
Skills you'll gain: Social Determinants Of Health, Health Disparities, Health Equity, Health Systems, Health Care Administration, Governance, Health Care, Care Management, Public Health, Stakeholder Management, Health Policy, Stakeholder Analysis, Social Network Analysis, Collaboration, Organizational Structure, Performance Measurement
Beginner · Course · 1 - 3 Months

Macquarie University
Skills you'll gain: Cyber Governance, Security Awareness, Law, Regulation, and Compliance, Human Factors (Security), Security Strategy, Culture Transformation, Cyber Attacks, Mobile Security, Cyber Risk, Enterprise Security, Data Ethics, Cyber Security Strategy, Cybersecurity, Strategic Leadership, Cyber Operations, Leadership and Management, Leadership, Organizational Leadership, Leadership Development, Team Leadership
Beginner · Specialization · 3 - 6 Months

University of Michigan
Skills you'll gain: Music History, Classical Music, Music Theory, Instrumental Music, Musical Composition
Intermediate · Course · 1 - 4 Weeks

Politecnico di Milano
Skills you'll gain: Data Strategy, Business Modeling, Data Ethics, Design Thinking, Innovation, Customer Data Management, Augmented and Virtual Reality (AR/VR), Market Opportunities, Data Governance, Technology Strategies, Data Management, Data-Driven Decision-Making, Platform As A Service (PaaS), Product Development, Big Data, Customer Insights, Strategic Thinking, Systems Thinking, Digital Transformation, Business Transformation
Beginner · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: Responsive Web Design, User Interface (UI) Design, Web Design, Maintainability, Typography, Cascading Style Sheets (CSS), Usability, User Experience Design, Hypertext Markup Language (HTML), Color Theory, Animations, Creativity
Intermediate · Course · 1 - 3 Months

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Scala Programming, Programming Principles, Theoretical Computer Science, Other Programming Languages, Computer Programming, Functional Design, Algorithms
Mixed · Course · 1 - 3 Months

University of Glasgow
Skills you'll gain: Musical Composition, Instrumental Music, Music Theory, Music, Classical Music, Creativity
Intermediate · Course · 1 - 4 Weeks

ESADE Business and Law School
Skills you'll gain: Succession Planning, Governance, Business Management, Systems Thinking, Organizational Development, Business Risk Management, Leadership, Business Systems, Relationship Management, Conflict Management, Communication, Decision Making
Beginner · Course · 1 - 3 Months

Universidad Nacional Autónoma de México
Skills you'll gain: Algorithms, Computational Thinking, Theoretical Computer Science, Data Structures, Python Programming, Artificial Intelligence
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Dashboard, Data Visualization Software, Tableau Software, Data Visualization, Interactive Data Visualization, Data Storytelling, Data Presentation, Data Analysis, Statistical Visualization, Geospatial Mapping, Histogram, Color Theory, Advanced Analytics, Spatial Analysis, Scatter Plots, Data Science, Business Analytics, Marketing Analytics, Analytics, Forecasting
Beginner · Specialization · 1 - 3 Months

University of California San Diego
Skills you'll gain: Android Development, Application Development, Android (Operating System), Android Studio, Mobile Development, Software Development Tools, Game Design, Computer Programming Tools, Development Environment, Internet Of Things, Embedded Software, Web Servers, Web Applications, USB, Ubuntu, Peripheral Devices, Operating Systems, Software Installation, Command-Line Interface
Mixed · Course · 1 - 3 Months