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The fundamental theorem of arithmetic states that any number greater then 1 can be expressed as the product of a unique set of primes. i.e. 6=3x2. If 1 was a Prime number then 6=3x2x1=3x2x1x1 which means that the set of primes in no longer unique. They wanted the theorem to work, so mathematicians decided 1 can't be a prime number. Same goes for 0 becasue if 0 was a prime number then 0=0x2=0x3.
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Why is 21 composite and not prime?
21 has the factors 21,1,7,3. 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 89 prime or 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. 89 is prime.
Is 37 a prime ora composite?
37 is a prime 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.
What does prime and composite mean?
When referring to positive integers, prime means having only two factors and composite means having more than two.
Is 59 prime or a composite number?
A prime number is a number with two and only two factors: 1 (also known as unity) and itself. A composite number is a number with more than two factors; in other words, it has at least one factor besides 1 and itself. 59 does not have any factors besides 1 and itself (not more than two factors), so it is a prime number.
Is 11 composite or prime factors?
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. 11 is prime.
Does 12 have prime factors?
Yes, 12 has prime factors. The prime factors of 12 are 2, 2, and 3, so the distinct prime factors are 2 and 3. Almost all integers have prime factors. The integers without prime factors are -1, 0, and 1.
Is 43 prime composite or neither?
43 is a prime 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.
Why is 0 not a prime nor composite?
It does not have 2 factors. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 have a different name.
Is 13 a prime or Composite or Neither?
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. 13 is prime.
Is 71 a composite or prime?
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. 71 is prime.
Why isn't one and zero not a prime or composite number?
A prime number has two factors which 1 and 0 do not have. A composite number has more than two factors which 1 and 0 do not have.
Is 137 composite or prime?
137 is a prime number. A prime number has only two factors, which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.It is a prime number
Why is 21 composite and not prime?
21 has the factors 21,1,7,3. 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 73 a composite or prime and how do you know?
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. 73 is prime.
Is 11 a prime or composite number why?
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. 11 is prime.
Is 71 prime or 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. 71 is prime.No 71 is prime. 1 and 71 are the only factors.
