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103 is a prime number from 101-200. 103 has 2 factors, 1 and 103. It is the 27th prime number, and the second prime number from 101-200. 
103

Proofs

  • Yes — 103 can be divided by 1.
  • No — 103 cannot be divided by 2-102.
  • Yes — 103 can be divided by 103.

As an Exponent of Mersenne Number

2103 - 1 is divisible by 2,550,183,799, and is therefore not a prime number.

Relationship with other odd numbers

The numbers before

  • The previous prime number is 101.
    • There are no odd numbers between 101 and 103. As a result, they are twin primes.
  • The previous prime number before 101 is 97.
    • 97 and 103 are six numbers apart; therefore, they are sexy primes.

The numbers after

  • The next prime number is 107.
    • 103 and 107 are four numbers apart; therefore, they are cousin primes.
  • 109 is the next prime number after 103.
    • 103 and 109 are six numbers apart; therefore, they are sexy primes.