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.

Scrimba
Skills you'll gain: Responsive Web Design, JSON, User Interface (UI) Design, Color Theory, Cascading Style Sheets (CSS), HTML and CSS, Hypertext Markup Language (HTML), Restful API, Web Content Accessibility Guidelines, Event-Driven Programming, User Interface (UI), Web Design, Typography, Web Applications, Application Programming Interface (API), React.js, Web Design and Development, Web Development Tools, Javascript, Web Development
Beginner · Specialization · 3 - 6 Months

O.P. Jindal Global University
Skills you'll gain: Hospice, Infant Care, Mental Health Diseases and Disorders, Mental Health, Prenatal Care, Cognitive Behavioral Therapy, Critical Thinking
Build toward a degree
Beginner · Course · 3 - 6 Months

Institute for the Future
Skills you'll gain: Forecasting, Visionary, Innovation, Proactivity, Strategic Thinking, Strategic Planning, Cognitive flexibility, Creative Thinking, Action Oriented, Simulations, Optimism, Planning, Community Organizing, Creativity, Social Impact, Systems Thinking, Virtual Reality, Responsible AI, Trend Analysis, Brainstorming
Beginner · Specialization · 3 - 6 Months

EDHEC Business School
Skills you'll gain: Investment Management, Portfolio Management, Portfolio Risk, Investments, Return On Investment, Asset Management, Risk Analysis, Financial Modeling, Risk Management, Financial Analysis, NumPy, Python Programming, Simulations, Pandas (Python Package), Matplotlib, Data Manipulation
Mixed · Course · 1 - 4 Weeks

Nanjing University
Skills you'll gain: Psychology, Child Development, Human Development, Social Sciences, Sociology, Empathy & Emotional Intelligence, Learning Theory, Cultural Diversity, Mental Health Diseases and Disorders, Behavior Management
Mixed · Course · 1 - 3 Months

Skills you'll gain: Content Management Systems, Web Analytics, Search Engine Optimization, Web Design, Retail Management, Order Management, E-Commerce, Marketing Strategies, Blogs, Customer Relationship Management (CRM) Software, Content Creation, Dashboard, Email Marketing
Beginner · Course · 1 - 3 Months
Alberta Machine Intelligence Institute
Skills you'll gain: Generative AI Agents, Generative AI, Generative Model Architectures, LangChain, Large Language Modeling, Artificial Intelligence and Machine Learning (AI/ML), Model Deployment, Prompt Engineering, Google Cloud Platform, PyTorch (Machine Learning Library), System Monitoring, Embeddings, Deep Learning, Transfer Learning, Model Evaluation, Development Environment, Natural Language Processing, Vector Databases
Intermediate · Course · 1 - 4 Weeks

Universidad Nacional Autónoma de México
Skills you'll gain: Supervised Learning, Applied Machine Learning, Unsupervised Learning, Bayesian Network, Machine Learning Methods, Computational Logic, Program Development, Machine Learning, Artificial Intelligence, Machine Learning Algorithms, Markov Model, Artificial Intelligence and Machine Learning (AI/ML), Algorithms, Computational Thinking, Creativity, Game Theory, Theoretical Computer Science, Software Development, Generative AI, Social Sciences
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Scalability, Performance Tuning, .NET Framework, C# (Programming Language), System Programming, Application Performance Management, C (Programming Language), Debugging, Data Structures, Object Oriented Programming (OOP), Software Engineering, Interoperability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: OAuth, Microservices, Spring Boot, Containerization, Apache Kafka, Software Testing, Data Store, Docker (Software), Kubernetes, Unit Testing, Authentications, Integration Testing, Software Architecture, Security Testing, Event-Driven Programming, Restful API, Software Design Patterns, Java Programming, Role-Based Access Control (RBAC), Java
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Augmented and Virtual Reality (AR/VR), Game Design, User Interface (UI)
Beginner · Course · 1 - 3 Months

Skills you'll gain: Nursing Management, Patient-centered Care, Leadership, Professionalism, Trustworthiness, Teamwork, Collaboration, Emotional Intelligence, Resilience, Assertiveness, Empathy, Problem Solving, Active Listening, Communication
Intermediate · Course · 1 - 4 Weeks