10999999999
domain: N
Appears in sequences
- Smallest prime ending in exactly n 9's.at n=8A065582
- a(n) is that n-digit number m which minimizes m/(sum of digits of m); in case of a tie pick the smallest.at n=10A066007
- Number of palindromes of length <= n.at n=18A070199
- Primes of the form 10 followed by 9's only.at n=1A096209
- Primes with exactly nine 9's.at n=8A178558
- a(n) = 11*10^n - 1.at n=9A198700
- Primes of the form identical digits preceded by a 10.at n=14A201965
- Primes of the form m = 10^i + 10^j - 1, where i > j >= 0.at n=13A239720
- Primes of the form 10^i + 10^j - 1.at n=18A306855