823 is a prime number from 801-900. 823 has 2 factors, 1 and 823. It is the 143rd prime number, and the fourth prime number from 801-900.
Relationship with other odd numbers
The numbers before
- The previous prime number is 821.
- There are no odd numbers between 821 and 823. As a result, they are twin primes.
- The previous prime number before 821 is 811, 10 numbers away.
- 817 is a composite number, being the product of 19 and 43.
The numbers after
- The next prime number is 827.
- 823 and 827 are four numbers apart; therefore, they are cousin primes.
- 829 is the next prime number after 827.
- 823 and 829 are six numbers apart; therefore, they are sexy primes.