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1 cannot be a composite number because it is not divisible by any number other than itself.
It is not a prime because of the fundamental theorem of arithmetic: the unique prime factorisation theorem. This states that any positive integer greater than 1 can be expressed as a product of a unique set of primes. If 1 were considered a prime then you could add any number of 1s to the set of factors and the product would not change. For example,12 = 2*2*3 or 1*2*2*3 or 1*1*1*1*2*2*3 : so that the factorisation is no longer unique.
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Which numbers are prime numbers and which are composite numbers from 1 to 100?
1 is special 2 prime 3 prime 4 composite 5 prime 6 composite 7 prime 8 composite 9 composite 10 composite 11 prime 12 composite ext.
What is neither a prime nor a composite number?
It is 1 that is neither a prime or a composite number The number 1 is neither prime nor composite.
What is 1 a prime or composite?
Prime.
Is 10011 composite or prime?
10011 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
Is 72 prime composite?
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 72 is composite.
