86568

Appears in sequences

• Numbers k such that 10*3^k + 1 is prime.at n=29A005539
• Palindromes whose smallest palindromic proper multiple is the number concatenated with itself.at n=35A119368
• The maximum possible value for the apex of a triangle of numbers whose base consists of a permutation of the numbers 0 to n, and each number in a higher row is the sum of the two numbers directly below it.at n=13A189390