99999999998
domain: N
Appears in sequences
- Largest n-digit squarefree number.at n=10A074110
- {Concatenation of n-1 and n+1}/n where n is a member of A069871.at n=22A077192
- Positive integers k such that f(k)+f(k)=concatenation of k and k, where f(k)=k(k+3)/2 (A000096).at n=10A099150
- Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-9.at n=17A116229
- Largest n-digit number that is divisible by exactly 3 primes (counted with multiplicity).at n=10A180927
- a(n) is the largest n-digit number with exactly 8 divisors, a(n) = 0 if no such number exists.at n=10A182676
- Positive integers a(n) such that number of digits in decimal expansion of a(n)^a(n) is divisible by a(n).at n=21A256162
- Nontotients of the form 10^k - 2.at n=9A292552