Prime numbers don't have proper factors.
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445 is a composite number because it has factors other than 1 and itself. It is not a prime number.The factors of 445 are 1, 5, 89, and 445.The factor pairs of 445 are 1 x 445 and 5 x 89.The proper factors of 445 are 1, 5, and 89 or,if the definition you are using excludes 1, they are 5 and 89.The prime factors of 445 are 5 and 89.The distinct prime factors of 445, since there is no repetition of factors, are the same: 5 and 89.The prime factorization of 445 is 5 x 89.
89 is prime, so its only factors are 1 and 89.1, 89.
178 is a composite number because it has factors other than 1 and itself. It is not a prime number.The 4 factors of 178 are 1, 2, 89, and 178.The factor pairs of 178 are 1 x 178 and 2 x 89.The proper factors of 178 are 1, 2, and 89 or,if the definition you are using excludes 1, they are 2 and 89.The prime factors of 178 are 2 and 89.The distinct prime factors (listing each prime factor only once) of 178 are also 2 and 89.The prime factorization of 178 is 2 x 89.NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.
89 is a prime number. The only two factors of a prime number are 1 and itself.The only factor pair of 89 is 1 x 89. There is only one factor pair of a prime number.The proper factors of 89 are only 1 or, if the definition you are using excludes 1, there are none.The only prime factor of 89 is 89. There is only one prime factor of a prime number - itself.The distinct prime factor (listing each prime factor only once) of 89 is also 89.The prime factorization of 89 is 89. In some cases, to emphasize that it is prime, you might write the prime factorization as 1 x 89 (but 1 is not a prime number).NOTE: There cannot be common factors, a greatest common factor, or a least common multiple of a single number because "common" refers to factors or multiples that two or more numbers have in common.
1 23 89 2047.Its factors are: 1, 23, 89 and 2047