Q:
# Is 19 a prime number?

**The number 19 is the eighth prime number.** A prime number is a positive, whole number that is only divisible by one and itself. Nineteen is also the seventh Mersenne prime exponent, which is a prime number that is one less than a power of two.

Out of the first 100 numbers, 25 of them are prime numbers. The opposite of a prime number is a composite number. Because all even numbers are divisible by two, the number two is the only even prime number. Similarly, no prime numbers that are higher than five end in five. One is a unique number because it is neither a prime number nor a composite number.

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## What is the largest number in the world?

A: The largest named number in the world is a googolplexian. Because numbers are infinite, and any number can be made larger by simply adding to it, the large... Full Answer >Filed Under: -
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## Is 2 a prime number?

A: Yes, 2 is a prime number. In fact, 2 is the only even number that is prime. A prime number is a number that has only two factors, the number 1 and itself. Full Answer >Filed Under: -
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## What is a binomial random variable?

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## What does "composite" mean in math?

A: In math, a composite number is a whole number that can be divided evenly by a number other than itself and one. If a number cannot be divided evenly in thi... Full Answer >Filed Under: