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Prime Factorization every composite number expressed as a product of a prime number. Concept Summary: n n Prime n n A whole number that has exactly two factors, 1 and the number itself. 11, 13, 25 n Composite n A number greater than 1 with more than two factors. n 6, 10, 18 Neither prime nor composite n 1 has only one factor. O has an infinite number or factors. n 0, 1 n .Identify Prime and composite, or neither 28: 1, 2, 4, 7, 14, and 28. Since there are more than 2 factors it is a composite number. n 11: 1 and 11. Since there are exactly two factors, 1 and the number itself, 11 is a prime number. n Remember Factor: when two or more numbers are multiplied, each number is called a factor of the product. n Prime Number: a whole number that has exactly two unique factors, 1 and the number itself. n Composite number: a number greater than 1 with more than two factors. n Prime Numbers and Prime Factorization Every Composite number can be written as a product of prime numbers 6 =2x3 8 =2x2x2 12= 2 x 2 x 3 Prime Factors Factors that are prime numbers are called prime factors. You can use Factor Tree to find prime factors. This one shows the prime factors of 50 50 2 25 5 5 50=2 x 5 x 5 is the prime factorization of 50.