55187

Appears in sequences

• Numbers which form a prime by appending a 3-digit odd number and form no primes by appending any 1- or 2-digit odd number not beginning with 0.at n=7A091089
• Primefree centuries (i.e., numbers k such that no prime exists between 100*k and 100*k+99).at n=7A181098
• Numbers which form a prime by appending a 3-digit number and form no primes by appending 1 digit or 2 digits.at n=3A365813