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The number 1 is neither prime nor composite.
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∙ 14y ago
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What is the factors and prime factors of 9?
The factors are 1, 3 and 9, while the prime factor is 3. Some people will say that 1 is also a prime factor, but 1 does not fit the definition of prime.
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.
Why do you think mathmaticians decided not to call 1 a prime number?
A prime number has two factors, 1 and itself. 1 is not considered a prime number as its factors are 1. Following the rule for primes, you could say that its factors are 1 and 1, but 1 and 1 are obviously the same number.
Is 402 a co-prime?
No. You have to have at least two numbers to say whether they are co prime, as it is only if they have a common factor of 1.
What factors do 8 and five have in common?
1. That is to say, they have no prime factors in common.
Why do mathematicians say that 1 is'nt prime?
It is because of the way in which primes are defined.
What do i prime and composite?
ok well i am in prime and composite in math class and this is how: If the number is a prime then it can only have 2 factors. If it has 3 or more it is a composite number. Say 25 has a lot of factors so it is a composite number. And if 1 has only 1 factor then it is a prime number. And there you have prime and composite.
Is 1 a prime nmber?
1 was considered a prime number for many years. But there is a problem: any number can be written as the product of its prime factors. E.g. 30 = 2*3*5 (2,3 and 5 being primes). If 1 is a prime, then the prime factorization of 30 could be 2*3*5*1 or even 2*3*5*1*1*1*1. So mathematicians had to say "primes, but not 1!" all the time. Therefore 1 is no longer (mostly for practical reasons) considered prime.
Why do mathematics say one is not prime?
Because 1 has only one factor which is itself
If the greatest common factor of two numbers is 1 what can you say about the numbers?
They are relatively prime.
Can a prime number be a multiple of any other number exept itself?
You could say that a prime number is also a multiple of 1. A good definition of prime number is: "a natural number with exactly two distinct factors". This definition explains why 1 is not a prime number.
How many prime numbers between 1 and 8888888888888888888888888888888888888888888888?
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