1 is not prime, so it can't be a prime factor.
No, 1 is not prime.
1 is a factor of 18; neither 1 nor 18 is prime.
All prime numbers have a common factor of 1.
Nope.... 1 is a factor of every prime number !
No - as 1 is not a prime number.
No, 1 is not a prime number.
No, 1 is not a prime number.
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
The prime factor of 7 is 7. The prime factor of 121 is 11.
The purpose of a factor tree is to divide a number into prime factors. 1 is not a prime number.
1789 is a prime number and is its only prime factor. Its other factor is 1.