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Earn +20 ptsQ: Why isn't 667 a prime number?
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Why isnt 39 a prime number?
39 is not a prime number because it has four factors: 1,3,13,39 and because prime number are numbers who has 2 factors.
WHAT IS the product of the prime numbers between 20 to 30?
23*29=667
Is 2001 prime?
No, 2001 can be factored. (3 * 667)
Is infinity a prime or composite?
Infinity is not a number. It cannot be graphed nor placed onto a number line. Infinity is an idea, a prospect. So the answer is "none" since Infinity isnt a 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.
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