Pre-Algebra 09 - Division and Prime Numbers

The video tutorial by Professor Von Schmohawk at WHY U covers the four basic arithmetic operations, focusing on division as the inverse of multiplication. It explains two interpretations of division and discusses factors, divisors, prime, and composite numbers. The Sieve of Eratosthenes is introduced as a method to identify prime numbers. The video also provides tricks for determining divisibility by primes and highlights the ongoing quest to find large prime numbers.

What is the fourth basic arithmetic operation discussed in the text?

Explain the two interpretations of the division operation as described in the text.

What are natural numbers that have exactly two factors called?

What is the significance of the number 1 in relation to prime numbers?

Describe the Sieve of Eratosthenes and its purpose.

List some tricks for determining if a number is composite.

Why is it difficult to determine if a very large number is prime?