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Because 1 is not a Prime number.
What else can I help you with?
Is 1 a product prime factor of 105?
1 is not prime, so it can't be a prime factor.
Is 1 a prime factor of thirty?
No, 1 is not prime.
Is 1 a factor of 18 and a prime?
1 is a factor of 18; neither 1 nor 18 is prime.
Is Every prime number is a factor of 1.?
Nope.... 1 is a factor of every prime number !
Which are the prime numbers with 1 as the common factor?
All prime numbers have a common factor of 1.
Is 1 a prime factor of 28?
No, 1 is not a prime number.
Can 1 be a prime factor of a number?
No - as 1 is not a prime number.
Is 1 a prime factor of 15?
No, 1 is not a prime number.
What are the prime factors of 71?
71 is a prime number and its only prime factor is itself. Its only other factor is 1, which is not a prime number.none because 71 is prime71 is a prime number and its only prime factor is itself. Its only other factor is 1, which is not a prime number.none because 71 is prime
What are the factors and prime factor of 121?
The prime factor of 7 is 7. The prime factor of 121 is 11.
Can 1 and the factor be used itself to be a factor tree?
The purpose of a factor tree is to divide a number into prime factors. 1 is not a prime number.
What are the factors and prime factors of 1789?
1789 is a prime number and is its only prime factor. Its other factor is 1.
