111987

Appears in sequences

• Indices of primes in sequence defined by A(0) = 31, A(n) = 10*A(n-1) - 9 for n > 0.at n=18A101823
• Integers whose American English names (minus punctuation) can be split into two parts wherein the product of the letter-ranks of one part is equal to that of the other.at n=6A373391