Hi, what do you want to do?
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Prime Factorization
This video shows how to find the prime factorization of a two-digit number and write the answer in exponential notation. Practice problems available. Practice problems are available. [4:09]
Sophia Learning
Sophia: Factoring Monomials: Lesson 11
This lesson will cover how to factor the coefficient separately from each variable in order to factor a monomial. It is 11 of 11 in the series titled "Factoring Monomials."
Sophia Learning
Sophia: Factoring Monomials: Lesson 7
This lesson will cover how to factor the coefficient separately from each variable in order to factor a monomial. It is 7 of 11 in the series titled "Factoring Monomials."
Khan Academy
Khan Academy: Computational Number Theory: The Prime Number Theorem
How can we estimate the number of primes up to x?
Khan Academy
Khan Academy: Computational Number Theory: Algorithmic Efficiency
How can we improve the speed of a (deterministic) primality test?
Khan Academy
Khan Academy: Computational Number Theory: Primality Test
Setting up the problem of a primality test.
Khan Academy
Khan Academy: Computational Number Theory: Primality Test With Sieve
An attempt at an optimal trial division primality test using the Sieve of Eratosthenes.
Khan Academy
Khan Academy: Computational Number Theory: Summary (What's Next?)
Why is factorization hard, yet generating primes easy? Where do we go from here?
Khan Academy
Khan Academy: Computational Number Theory: Time Space Tradeoff
What is our memory limit? How can save time at the expense of space?
Khan Academy
Khan Academy: Randomized Algorithms: Random Primality Test (Warm Up)
Introduction to random primality tests & how they will work (warm up).
Khan Academy
Khan Academy: Computational Number Theory: Sieve of Eratosthenes
Sieve of Eratosthenes allows us to generate a list of primes.
Math Playground
Math Playground: What Is a Prime Number?
This video defines prime numbers by examining the concept of factors. [4:42]
TED Talks
Ted: Ted Talks: Harry Baker: A Love Poem for Lonely Prime Numbers
Watch this TEDTalk by "poet and math student" Harry Baker as he combines words and number concepts into love poetry.
Khan Academy
Khan Academy: Prime Factorization Exercise
Demonstrates how to find the prime factors of whole numbers. [3:49]
Khan Academy
Khan Academy: Recognize Prime and Composite Numbers
Looks at how to recognize prime and composite numbers and ones that don't fit into either category. [4:39]
Virtual Nerd
Virtual Nerd: What's a Prime Number?
Instructional video explores how prime numbers are defined. [1:31]
Khan Academy
Khan Academy: Prime Factorization: Prime Factorization
This video shows how to find the prime factorization of a two-digit number and write the answer in exponential notation.
Khan Academy
Khan Academy: Vi Hart: Doodling in Math: Sick Number Games
Video demonstrating some number games that involve mathematical concepts of number theory such as prime numbers, Pascal's triangle, and the Sierpinski triangle. [5:28]
Khan Academy
Khan Academy: Doodling in Math: Doodling in Math: Sick Number Games
Video demonstrating some number games that involve mathematical concepts of number theory such as prime numbers, Pascal's triangle, and the Sierpinski triangle.
Khan Academy
Khan Academy: The Fundamental Theorem of Arithmetic
In this video lesson students explore the fundamental theorem of arithmetic. Student learn about prime and composite numbers.
Khan Academy
Khan Academy: Prime Numbers
Discusses the properties of prime numbers and how to recognize them. [8:12] It includes a link to a practice exercise.
Khan Academy
Khan Academy: Prime Factorization: The Fundamental Theorem of Arithmetic
This video walks through the "Fundamental Theorem of Arithmetic".
Art of Problem Solving
Art of Problem Solving: How to Tell if a Number Is Prime
Video tutorial uses examples to reinforce understanding of how to tell if a number is prime. [9:39]