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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Q:
## Is 33 a prime number?

A: The number 33 is not a prime number. Prime numbers only have factors of themselves and 1. The positive factors of 33 are 1, 3, 11 and 33. Full Answer >Filed Under: -
Q:
## Is two a prime number?

A: Two is a prime number. Two is the smallest prime number and the only even prime number, since all other even numbers divide by two. Full Answer >Filed Under: -
Q:
## What is the difference between a number and a numeral?

A: A number is a theoretical concept, and a numeral is the way that people denote that concept. A numeral contains one or more written symbols, but a number c... Full Answer >Filed Under: -
Q:
## What is the highest number?

A: There is no highest number. Higher numbers can always be formed by adding on to a previous number, a process that can go on infinitely. Infinity itself is ... Full Answer >Filed Under: