1 is the second number in the numbers series after 0. It is not a prime number. The factor of 1 is 1 itself.
Factor of 1: 1
Negative factor of 1: -1
Questions related to factors of 1
Is 1 a composite number?
No
Is 1 a primary number?
No
Does 1 have exactly 2 factors?
1 has only one factor i.e. 1.