The smallest Prime number in which all of the digits are also prime is 2.
The smallest multi-digit prime number in which all of the digits are also prime is 23.
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All prime numbers are not odd numbers. 2 is an even prime number, and it is the only even prime number because all other even numbers have 2 as one of their factors.
Yes, prime numbers are whole numbers, by definition.
It is impossible to list the infinite number of prime numbers and composite numbers.
A number that is not a prime number is called a composite number because it can be made by multiplying prime numbers together. For example, 6 is a composite number that is the product of multiplying the prime numbers 2 and 3 together.
All prime numbers are special numbers because they help us to find the lowest common multiple of numbers and their highest common factor.