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 Arizona
Skills you'll gain: Physics, Engineering, Scientific, and Technical Instruments, Ancient History, Chemistry, General Science and Research, Global Positioning Systems, Scientific Methods, Scientific Visualization, Research, Simulations
Beginner · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: C++ (Programming Language), Data Structures, Object Oriented Programming (OOP), Object Oriented Design, Graph Theory, Development Environment, Data Storage, Engineering Software, Unstructured Data, Computer Programming, Algorithms, Data Storage Technologies, Debugging, Program Development, Database Systems, Database Theory, Network Routing, Theoretical Computer Science
Intermediate · Specialization · 1 - 3 Months

Northwestern University
Skills you'll gain: Machine Controls, Control Systems, Automation Engineering, Mathematical Modeling, Mathematical Software, Simulation and Simulation Software, Engineering Calculations, Engineering, Mechanics, Mechanical Engineering, Artificial Intelligence, Applied Mathematics, Engineering Analysis, Automation, Virtual Environment, Robotic Process Automation, Torque (Physics), Graph Theory, Matlab, Numerical Analysis
Intermediate · Specialization · 3 - 6 Months

Rice University
Skills you'll gain: Graph Theory, Algorithms, Computational Thinking, Data Analysis, Data Structures, Theoretical Computer Science, Network Analysis, Analysis, Programming Principles, Python Programming, Computer Programming
Intermediate · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Organizational Change, Leadership and Management, Business Management, Innovation, Coordination, People Management, Organizational Structure, Leadership, Personal Development, Goal Setting
Mixed · Course · 1 - 3 Months

AI CERTs
Skills you'll gain: Unity Engine, Video Game Development, Agentic systems, Generative AI Agents, Game Design, Artificial Intelligence and Machine Learning (AI/ML), Animation and Game Design, Artificial Intelligence, Generative AI, Game Theory, Machine Learning Algorithms, Design and Product, Design, Animations, Real Time Data
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Rmarkdown, Version Control, Data Science, R (Software), GitHub, Data Literacy, Data Analysis, R Programming, Statistical Programming, Exploratory Data Analysis, Software Installation
Mixed · Course · 1 - 4 Weeks
University of Michigan
Skills you'll gain: Network Analysis, Social Network Analysis, Graph Theory, Data Analysis, Analysis, Pandas (Python Package), Predictive Analytics, Unsupervised Learning, Matplotlib, Python Programming, Data Import/Export, Algorithms
Intermediate · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Unit Testing, Growth Mindedness, Data Structures, Graph Theory, Event-Driven Programming, Social Network Analysis, Interactive Data Visualization, Java, Java Programming, Network Analysis, Object Oriented Programming (OOP), Technical Communication, User Interface (UI), Object Oriented Design, Computer Programming, Willingness To Learn, Adaptability, Performance Tuning, Algorithms, Problem Solving
Intermediate · Specialization · 3 - 6 Months

University of Minnesota
Skills you'll gain: Workforce Planning, Employee Onboarding, Recruitment, Recruitment Strategies, Full Cycle Recruitment, Talent Acquisition, Job Analysis, Human Resources, Employee Engagement, Talent Sourcing, Interviewing Skills, Decision Making, Diversity and Inclusion
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Canva (Software), Design, Digital Design, Product Design, Graphic and Visual Design Software, Creative Design, Color Theory, Graphic Design, Intellectual Property, E-Commerce, Direct Selling, Digital Content, Digital Assets, Marketing, Marketing Materials
Advanced · Guided Project · Less Than 2 Hours
Stanford University
Skills you'll gain: Algorithms, Graph Theory, Theoretical Computer Science, Computational Thinking, Data Structures, Pseudocode, Operations Research
Intermediate · Course · 1 - 4 Weeks