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.

LearnQuest
Skills you'll gain: Reinforcement Learning, Responsible AI, Agentic systems, Artificial Intelligence, Machine Learning Methods, Distributed Computing, Simulations, Transfer Learning
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Photography, Photo Editing, Adobe Creative Cloud, Image Quality, Editing
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Capital Expenditure, Financial Modeling, Financial Analysis, Revenue Forecasting, Business Valuation, Financial Statement Analysis, Financial Statements, Financial Forecasting, Depreciation, Cash Flow Forecasting, Balance Sheet, Annual Reports, Sales, Working Capital, Microsoft Excel
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Integrated Development Environments, Application Deployment, Cross Platform Development, Application Development, Development Environment, Software Development Tools, Java, Apache Maven, Programming Principles, Software Development
Intermediate · Guided Project · Less Than 2 Hours

AI CERTs
Skills you'll gain: Blockchain, Cryptography, Scripting, Transaction Processing, Secure Coding, Application Development, Programming Principles, FinTech, Digital Assets, Emerging Technologies
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Unity Engine, Torque (Physics), Game Design, Video Game Development, Mechanics, Simulations, Mathematical Modeling, Physics, Engineering Calculations, Scripting, C# (Programming Language), Linear Algebra, Applied Mathematics
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Java Programming, Java, Object Oriented Design, Data Structures, Debugging
Intermediate · Course · 1 - 4 Weeks

Dartmouth College
Skills you'll gain: Simulation and Simulation Software, Digital Transformation, Systems Thinking, Complex Problem Solving, Operations Research, Predictive Analytics, Data-Driven Decision-Making, Verification And Validation, Process Optimization, Data Integration, Risk Management, Python Programming, Event-Driven Programming, Probability & Statistics, Performance Analysis
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Derivatives, Risk Management, Credit Risk, International Finance, Financial Market, Portfolio Management, Financial Modeling, Finance, Market Dynamics, Business Mathematics
Mixed · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Loans, Higher Education, Student Services, Financial Policy, Education and Training, Public Policies, Policy Analysis, Return On Investment, Economics, Advocacy
Mixed · Course · 1 - 3 Months

Skills you'll gain: Linux, Linux Administration, Red Hat Enterprise Linux, File Systems, Scripting, Linux Servers, Shell Script, System Configuration, Linux Commands, Unix Shell, Unix Commands, Systems Administration, Web Servers, System Monitoring, Command-Line Interface, OS Process Management, Performance Tuning, Service Management, User Accounts
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Active Directory, Software Installation, System Configuration, Microsoft Intune (Mobile Device Management Software), Azure Active Directory, Hyper-V, Enterprise Architecture, System Implementation, Infrastructure Architecture, Configuration Management, IT Infrastructure, Mac OS, Microsoft Azure, System Requirements, Scalability
Intermediate · Course · 1 - 4 Weeks