99999999997
domain: N
Appears in sequences
- Numbers k such that k^2 contains only digits {0,4,9}, not ending with zero.at n=19A058443
- Largest n-digit semiprime.at n=10A098450
- Greatest hypotenuse of primitive Pythagorean triangle not exceeding 10^n.at n=10A117341
- a(n) = 10^n - 3.at n=10A173833
- a(n) is the largest n-digit number with exactly 4 divisors.at n=10A182648
- Numbers k not divisible by 10 such that k^2 and 2*k are in A046030.at n=13A308961