181 is a prime number from 101-200. 181 has 2 factors, 1 and 181. It is the 42nd prime number, and the seventeenth prime number from 101-200.
Proofs[]
As an Exponent of Mersenne Number[]
2181 - 1 is divisible by number such as 43,441, 1,164,193 and 7,648,337, and is therefore not a prime number.
Relationship with other odd numbers[]
The numbers before[]
- The previous prime number is 179.
- There are no odd numbers between 179 and 181. As a result, they are twin primes.
- The previous prime number before 179 is 173.
The numbers after[]
- The next prime number is 191.
- Notably, 187 is not a prime number. It can be factored as 11 x 17.
- 193 is the next prime number after 191.