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.

University of Pennsylvania
Skills you'll gain: People Analytics, Descriptive Analytics, Financial Statement Analysis, Business Analytics, Data-Driven Decision-Making, Customer Analysis, Human Capital, Human Resource Strategy, Operations Research, Financial Analysis, Marketing Analytics, Analytics, Operational Efficiency, Predictive Analytics, Customer Insights, Financial Data, Operational Analysis, Peer Review, Human Resources, Business Operations
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Prompt Engineering, Prompt Patterns, Generative AI, ChatGPT, Image Quality
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Figma (Design Software), User Experience Design, Mockups, Usability Testing, User Interface (UI) Design, Design Elements And Principles, Design Reviews, Prototyping, Technical Communication, Typography, Design Research, Animations, Color Theory
Beginner · Course · 1 - 3 Months

Skills you'll gain: Logo Design, Branding, Brand Strategy, Marketing Design, Graphic Design, Style Guides, Typography, Adobe Creative Cloud, Workflow Management, Visual Design, Asset Management, Color Theory, Storytelling
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Django (Web Framework), Full-Stack Web Development, Version Control, Restful API, Data Structures, Unix Commands, Bootstrap (Front-End Framework), Git (Version Control System), Back-End Web Development, GitHub, Web Design and Development, Relational Databases, Front-End Web Development, Object Oriented Programming (OOP), Database Management Systems, SQL, Database Design, Python Programming, Computer Programming, Cloud Hosting
Build toward a degree
Beginner · Professional Certificate · 3 - 6 Months

Meta
Skills you'll gain: React Native, iOS Development, Core Data (Software), Restful API, Version Control, Apple iOS, UI/UX Research, Usability Testing, Apple Xcode, Data Structures, Swift Programming, Jest (JavaScript Testing Framework), User Interface (UI), Unix Commands, Git (Version Control System), Persona (User Experience), GitHub, Interaction Design, Mobile Development, Javascript
Build toward a degree
Beginner · Professional Certificate · 3 - 6 Months

Berklee
Skills you'll gain: Music Theory, Music, Musical Composition, Instrumental Music, Music Performance
Mixed · Course · 1 - 3 Months

Skills you'll gain: Adobe Illustrator, Graphic and Visual Design, Color Theory, Adobe Creative Cloud, Creative Design, Graphic and Visual Design Software, Visualization (Computer Graphics), Design Elements And Principles, Graphic Design, Design, Visual Design
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: React Native, Android Studio, Restful API, Version Control, UI/UX Research, Usability Testing, Git (Version Control System), Data Structures, Jest (JavaScript Testing Framework), Unix Commands, Android Jetpack, Android Development, Persona (User Experience), GitHub, Interaction Design, Kotlin, User Experience Design, User Interface and User Experience (UI/UX) Design, Mobile Development, Javascript
Build toward a degree
Beginner · Professional Certificate · 3 - 6 Months

University of Virginia
Skills you'll gain: Entrepreneurship, Philanthropy, Corporate Sustainability, Stakeholder Engagement, Business Ethics, Sustainable Business, Environmental Social And Corporate Governance (ESG), Stakeholder Analysis, Environmental Issue, Business Modeling, Business Strategy, Business, Business Acumen, Innovation, Company, Product, and Service Knowledge, Employee Engagement, Organizational Leadership
Mixed · Course · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: Performance Management, Performance Appraisal, Performance Review, Compensation Management, Compensation Strategy, Compensation and Benefits, Constructive Feedback, Workforce Planning, Human Resource Strategy, Human Resources, Employee Onboarding, Recruitment, Employee Performance Management, Recruitment Strategies, Human Capital, Full Cycle Recruitment, Talent Acquisition, Human Resources Management and Planning, Compensation Analysis, People Management
Beginner · Specialization · 3 - 6 Months

University of California San Diego
Skills you'll gain: Data Structures, Algorithms, Data Storage, Programming Principles, File Systems, Graph Theory, Computer Programming, C++ (Programming Language), Java, Debugging
Intermediate · Course · 1 - 3 Months