100003

This number is a prime.

The smallest naughty prime whose sum of digits and number of zeros are equal. [Loungrides]

The List of Largest Known Primes (another of the Prime Pages' resources) contained 100003 entries on 24 February 2012. [Stath]

The sum of 13 consecutive primes (7643+7649+7669+7673+7681+7687+7691+7699+7703+7717+7723+7727+7741). Note that 100003 is 13 with 1+3 zeros in the middle. [Makk]

The smallest prime number that has two more digits than its prime index (9593). See PC40000...00031 (45-digits). [Gaydos]

Smallest prime whose sum of digits equals number of loops in its decimal expansion. [Sariyar]

The smallest prime p whose product of digit-factorials equals its digit-length, i.e., 1!*0!*0!*0!*0!*3! = 6. Note that prime(6) = the zeroless form of p. [Worrom]

The first missing prime in the first million digits of e. [Gupta]