59999999999
domain: N
Appears in sequences
- Smallest prime containing exactly n 9's.at n=10A037071
- Smallest prime ending in exactly n 9's.at n=9A065582
- Primes of the form identical digits preceded by a 5.at n=11A090153
- Primes of the form 6*10^k - 1.at n=6A093946
- Positive integers a such that f(3a)+f(a)=concatenation of 3a and a, where f(k)=k(k+3)/2 (A000096).at n=10A099151
- Smallest prime of the form 5 followed by n copies of some k.at n=9A112749
- Primes consisting of a digit and a nonempty string of 9's (i.e., primes of the form k*10^m - 1, where k is any digit).at n=25A141311
- Smallest n-digit prime having at least n-1 digits equal to 9.at n=10A268707