1 is the identity element of multiplication.
.1 is not prime, since a prime has exactly two positive divisors.1 is not composite since it cannot be written as the product of primes.The number 1 is not called a prime OR composite number. It is called a f*cking UNIT !
It is in a class called "units" since it is neither prime nor composite.
Composite, since it is divisible by 5. ■
The number is composite since its factors are 1,2,253,506
1 is not prime or composite since it has no factor but only itself.
One and zero, respectively.
The number 121 is a composite number, since it is divisible by 11.
1 and any factors that are themselves composite since none of these are prime.
not prime, since it is divideable by 5, and 31.
Since 196 is a positive even integer it is a composite number.
Since it can be evenly divided by 5, 265 is a composite number.
Since 160 is a composite number, it would be a composite factor.