199 is a prime number from 101-200. 199 has 2 factors, 1 and 199. It is the 46th prime number, and the twenty-first and last prime number from 101-200. If you put the digits of 199 in any order, you still get a prime number (919, 991). In fact, you can even turn it upside down and still get a prime number (661).
As an Exponent of Mersenne Number
2199 - 1 is divisible by 164,504,919,713, and is therefore not a prime number.
Relationship with other odd numbers
The numbers before
- The previous prime number is 197.
- There are no odd numbers between 197 and 199. As a result, they are twin primes.
- The previous prime number before 197 is 193.
- 193 and 199 are six numbers apart; therefore, they are sexy primes.