The time is prime to learn about prime numbers--and in this BrainPOP movie, Tim and Moby are primed to teach you everything you need to know about these numerical building blocks! First, discover the one number that every prime number is divisible by, besides itself. Explore the work of ancient mathematicians like Euclid and Eratosthenes, who studied primes more than 2,000 years ago. See how every whole number greater than 1 is either a prime number itself or formed by multiplying prime numbers together. And get a glimpse of just how many prime numbers there are--and why the record for “biggest prime number ever” isn’t exactly a permanent one!