99999997
domain: N
Appears in sequences
- Numbers k such that k^2 contains only digits {0,4,9}, not ending with zero.at n=14A058443
- Largest n-digit semiprime.at n=7A098450
- Numbers k such that k concatenated with k-5 gives the product of two numbers which differ by 6.at n=18A116125
- n times n+6 gives the concatenation of two numbers m and m-8.at n=27A116237
- Numbers k such that k*(k+5) gives the concatenation of two numbers m and m-4.at n=17A116261
- Numbers k such that k*(k+4) gives the concatenation of a number m with itself.at n=18A116288
- Greatest hypotenuse of primitive Pythagorean triangle not exceeding 10^n.at n=7A117341
- Numbers k such that k and k^2 use only the digits 0, 4, 7 and 9.at n=36A136960
- a(n) = 10^n - 3.at n=7A173833
- a(n) is the largest n-digit number with exactly 4 divisors.at n=7A182648
- Numbers k not divisible by 10 such that k^2 and 2*k are in A046030.at n=9A308961
- Zeroless numbers that have the largest possible remainder when divided by their digit product.at n=16A348834