9999997

Appears in sequences

• Numbers k such that k^2 contains only digits {0,4,9}, not ending with zero.at n=13A058443
• Largest n-digit multiple of n.at n=6A066557
• Triangle read by rows: T(n, k) = 10^(n-1) - 1 + k*floor(9*10^(n-1)/n), for 1 <= k <= n.at n=27A093846
• Numbers k such that k concatenated with k-5 gives the product of two numbers which differ by 6.at n=16A116125
• n times n+6 gives the concatenation of two numbers m and m-8.at n=23A116237
• Numbers k such that k*(k+5) gives the concatenation of two numbers m and m-4.at n=15A116261
• Numbers k such that k*(k+4) gives the concatenation of a number m with itself.at n=16A116288
• Numbers k such that k and k^2 use only the digits 0, 3, 4, 7 and 9.at n=36A136934
• Numbers k such that k and k^2 use only the digits 0, 4, 7 and 9.at n=28A136960
• a(n) = 10^n - 3.at n=6A173833
• Largest n-digit number missing in first 10^n digits after the decimal point in expansion of Pi.at n=6A260627
• Largest n-digit lucky number.at n=6A261512
• Largest n-digit number ending in n.at n=6A279913
• Numbers k not divisible by 10 such that k^2 and 2*k are in A046030.at n=8A308961