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Because otherwise the fundamental theorem of arithmetic, the unique factorisation theorem, would fail.

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9y ago

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Is there an equation to find prime numbers?

a prime number is a number that can only be divided by 1and its self... 1 isnt a prime number but 2, 3, 5, 7, 9, 11 etc... are prime numbers.


Why is is important that 1 is not a prime number?

It important that 1 is not prime because a quote says: "A prime number is a natural number that has exactly two different natural number factors. and so i say 1 is not a prime because a prime number has 2 factor 1 and it self and 1 dose not.


Is the number of feet in 4 and one third yards prime or composite?

prime because 4.5 yards equals 13 feet and 13 is prime because theres no number you can multiply to get 13 that isnt 1 and itself


Is 62 a relatively prime number?

62 is not a prime number and you cannot get a relitavely prime number it either is a prime number or it isnt a prime number! The definition of a prime number is a number that can only be divided b itself and one. No other number 62 can be divided by 2 as well as itself and 1 so NO IT IS NOT A PRIME NUMBER even numbers tend not to be prime numbers because they can be divided by two the only even number that is prime is 2 because it can only be divided by itself and 1 I hope this helped!


Why isnt 1 prime or composite?

1 is neither prime nor composite because Eratosthenes decided that it was nor prime nor composite because 1x1 is 1, but then again,1x any other number is that number, so one can go into every number before and after infinity. Confusing right? Try looking up on Wiki the guy Eratosthenes.


Why is it important that 1 is not a prime?

1 is neither a prime, nor 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 the number 1 a prime number?

no 1 is not a prime number


What is the smallest number that looks prime but really isnt?

It isn't clear what you mean with "looks like prime". What would your criteria be to "look like a prime"? The first prime numbers are:2, 3, 5, 7, 11, 13, 17, 23, 29, 31 ...Other positive integers (larger than 1) are composite numbers. The number 1 has a special role, as the identity element of multiplication. It is neither a prime number nor a composite number.


Which type of number is most important to factor?

Composite numbers.


Is 1 the lowest prime number?

No; 1 is not a prime number. The lowest prime number is 2.


Is 1 a prime or prime?

No 1 is neither a prime number or a composite number


What numbers is prime number?

A prime number is a number that is only divisible by itself and 1. 1 is NOT a prime number.