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One is neither a Prime number or a composite number. A prime number is defined as having exactly two factors; one and the number itself. (Example for the number 5: 1 x 5 = 5...factors -- 1,5) Composite numbers have three or more factors. (Example for the number 8: 2 x 4 = 8 and 1 x 8 = 8...factors -- 1,2,4,8) Since the number one has only 1 factor (1 x 1 = 1), it falls in neither category. Poor one; it is the loneliest number!

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Q: Can the number one be considered a prime number?
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Related questions

Why is one not considered prime?

The number one is not prime because it can only be divided by one number (not too) as itself and 1 are the same number


Why is one not considered a prime number?

One is neither prime nor composite. For a number to be prime, it can only be dividable by 2 numbers. One is only divisible by one number, 1.


Is one considered a prime number?

One is not considered a prime number, because a normal prime number only has two divisors, itself and one. But one only has one divisor- one and itself, which is also one. One is a special case, not prime, not composite.No, it is the multiplicative identity and neither prime or composite. There was a short period in history when some called it prime--but those years are long gone.


Why number one is not considered prime nor composite?

prime number are two factors except 1 and itself


When is a number considered prime?

A number is considered prime if it has only two factors.


Is number 1a prime or composite number?

1 is not considered to be a prime or composite number because it has only one factor which is itself.


Is there a number that is prime and even?

2 is considered a prime number.


Is 13 prime or composite?

13 would be considered a prime number, because it can only be divided by one and itself.


Is one the only whole number that is not prime or composite?

Yes and also 0 is not considered to be composite or prime although it is an even number.


Is one the smallest odd prime number?

No because 1 is not considered to be a prime or a composite number and so therefore it is 3.


What is the lowest prime number 0 1 2 3 4 5?

Answer: one Answer: two. In the past, one used to be considered a prime number, but currently most mathematicians don't count it as a prime number.


Why is it that 2 is the least prime number?

Because 2 has only two factors which are itself and one One is not considered to be a prime number because it has only one factor which is itself