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.

Ball State University
Skills you'll gain: Statistical Methods, Probability & Statistics, Statistical Modeling, Statistical Programming, Statistical Analysis, Probability Distribution, Statistical Inference, Bayesian Statistics, Data Science, Sampling (Statistics), Statistical Hypothesis Testing, R Programming, Dimensionality Reduction, Simulations, Statistical Visualization
Build toward a degree
Intermediate · Course · 1 - 3 Months

University of Glasgow
Skills you'll gain: Business Transformation, Digital Transformation, Business Leadership, Strategic Leadership, Cross-Functional Collaboration, Organizational Leadership, Organizational Change, Leadership, Organizational Strategy, Leadership and Management, Corporate Strategy, Change Management, Innovation, Business, Strategic Decision-Making, Business Management, Business Strategy, Business Planning
Intermediate · Course · 1 - 4 Weeks

Lecturio
Skills you'll gain: Health Disparities, Psychosocial Assessments, Psychiatric And Mental Health Nursing, Nursing Care, Social Sciences, Stress Management, Social Determinants Of Health, Psychology, Sociology, Psychological Evaluations, Patient Education And Counseling, Mental and Behavioral Health, Cultural Responsiveness, Behavioral Health, Human Development, Cultural Diversity, Human Learning, Empathy & Emotional Intelligence, Learning Theory, Neurology
Intermediate · Course · 1 - 3 Months

Radio y Televisión Española
Skills you'll gain: Social Media Content, Social Media Strategy, Social Media Management, Content Strategy, Web Content, Media and Communications, Content Creation, Social Network Analysis, Digital Communications, Research
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cascading Style Sheets (CSS), User Interface (UI) Design, Browser Compatibility, HTML and CSS, Web Design, Responsive Web Design, Usability, Color Theory, Animations, Web Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Version Control, Git (Version Control System), GitHub, Command-Line Interface, Software Development Tools, User Accounts
Beginner · Guided Project · Less Than 2 Hours

University of California, Irvine
Skills you'll gain: Business Planning, Leadership and Management, Strategic Leadership, Employee Engagement, Business Management, Business Strategy, Goal Setting, Leadership, Accountability, Performance Measurement, Organizational Leadership, People Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Swift Programming, Apple Xcode, Apple iOS, iOS Development, Apple software proficiency, Application Development, Mobile Development, Mobile Development Tools, Object Oriented Programming (OOP), Programming Principles, Development Environment, Integrated Development Environments, Computer Programming
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Jenkins, Ansible, Devops Tools, Continuous Deployment, Software Development Tools, Configuration Management, Infrastructure as Code (IaC), Version Control
Intermediate · Course · 1 - 4 Weeks

Universitat Autònoma de Barcelona
Skills you'll gain: Human Resources, Negotiation, Adaptability, Resilience, Human Resource Strategy, Telecommuting, Organizational Change, Leadership and Management, Leadership, Virtual Teams, Workforce Management, Digital Transformation, Diversity and Inclusion, Emerging Technologies
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Preprocessing, Embeddings, Text Mining, Data Processing, Multilingualism, Applied Machine Learning, Pandas (Python Package), Data Transformation, NumPy, Scikit Learn (Machine Learning Library), Computer Programming, Software Installation
Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Data Validation, Virtual Environment, Scenario Testing, Agentic systems
Beginner · Project · Less Than 2 Hours