999000000999
domain: N
Appears in sequences
- Numbers k such that k*(k+4) gives the concatenation of two numbers m and m-2.at n=8A116275
- a(n) is the largest n-digit palindrome that is the product of two numbers having an equal number of digits, or 0 if no such palindrome exists.at n=11A308803
- a(n) is the largest palindromic number formed from two numbers with n digits multiplied together.at n=5A327897