557931

Appears in sequences

• Nonpalindromic numbers m such that the difference between the square of m and the square of the reversal of m is itself a perfect square. Numbers ending in 0 are excluded.at n=9A202386
• Partial sums of primes of the form (n+1)^7 - n^7.at n=2A221979
• Nonpalindromic positive integers k such that the absolute value of k^2 - reverse(k)^2 is a square.at n=23A256515