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## 5.2 Outline

- Divisibility
- definition
- divisor
- factor
- divides
- multiple

- number of divisors
- divisibility rule for 2
- divisibility rule for 3
- rules of divisibility for 1-12

- finding primes
- definitions
- prime number
- composite number

- sieve of Eratosthenes

- prime factorization
- factoring
- prime factorization
- fundamental

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