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]
Loyola University Chicago
Math Flix: Table of Factors
This QuickTime movie provides an opportunity to identify factors and with that information identify prime numbers. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Loyola University Chicago
Math Flix: Prime Numbers: Sieve of Eratosthenes Part 2
This QuickTime movie continues using a hundreds chart to record all the prime numbers between 1 and 100 by eliminating all the composite numbers. As you watch and listen to the teacher and students interact it helps clarify the thinking...
Loyola University Chicago
Math Flix: Prime Numbers: Sieve of Eratosthenes Part 1
This QuickTime movie uses a hundreds chart to record all the prime numbers between 1 and 100 by eliminating all the composite numbers. A pdf worksheet is available by clicking on the hyperlink at the bottom of the page. As you watch and...
Loyola University Chicago
Math Flix: Prime Numbers: Seen in Graphics
This QuickTime movie provides an explanation of just what prime numbers are using graphics. As you watch and listen to the teacher and students interact it helps clarify the thinking behind applying this concept.
Math Antics
Math Antics: Prime Factorization
Gain a basic understanding of prime factorization by watching this easy to understand video tutorial. Additional resources are available as part of a paid subscription service. [6:40]
Khan Academy
Khan Academy: Prime Numbers
Prime numbers are numbers that have only 2 factors: 1 and themselves. For example, the first 5 prime numbers are 2, 3, 5, 7, and 11. By contrast, numbers with more than 2 factors are called composite numbers.
Khan Academy
Khan Academy: Recognizing Prime and Composite Numbers
Can you recognize the prime numbers in this group of numbers? Which are prime, composite, or neither?
Khan Academy
Khan Academy: Primality Test With Sieve
This video lesson demonstrates an attempt at an optimal trial division primality test that uses the Sieve of Eratosthenes. This video lesson from Khan Academy is intended for students who are taking an introductory computer science course.
Sophia Learning
Sophia: Divisibility: Lesson 1
This lesson grouping provides students with a wide variety of tricks and techniques to determine if one number is divisible by another number. It is 1 of 6 in the series titled "Divisibility."
Sophia Learning
Sophia: Early Primes: Lesson 3
This video introduces early, easy to remember, prime numbers. This lesson is 3 of 7 in the series titled "Early Primes."
Sophia Learning
Sophia: Early Primes: Lesson 1
This video introduces early, easy to remember, prime numbers. This lesson is 1 of 7 in the series titled "Early Primes."