Multiplicative identity.
Because for any number a, 1*a = a
The Fibonacci sequence.
it is the first number
I will assume you mean "positive integers". In this case, the only number that is considered neither prime nor composite is the number 1. 1 has the special role of the identity element of multiplication, meaning that if you multiply a number by 1, it remains unchanged.
the number 1 is a special number. The number 1 is a confusing number to deal with, but it is called a special number.Example: Is 1 prime or composite? It is neither.
Substituting a name is "evaluating". But there is no special name for substituting an expression.
That number has no special name.
No special name.
late night special
The Fibonacci sequence.
1
it is the first number
A vanity number is a special telephone number that spells out a name or a special word on your telephone keypad. You can have it spell whatever you want.
The least common multiple, or LCM, of 1, 2, 3, 4 and 5 is 60.
I will assume you mean "positive integers". In this case, the only number that is considered neither prime nor composite is the number 1. 1 has the special role of the identity element of multiplication, meaning that if you multiply a number by 1, it remains unchanged.
the number 1 is a special number. The number 1 is a confusing number to deal with, but it is called a special number.Example: Is 1 prime or composite? It is neither.
1 is the smallest natural number. 1 is the factor of every number. 1 is neither prime nor composite.
Squares.