2221087domain: NAppears in sequencesNumbers k such that k | 10^k + 1.at n=32A015958Divisors of 10^11 + 1.at n=15A027899Numbers k such that k^3 divides 10^(k^2) + 1.at n=13A128683Numbers k such that k^2 divides 10^k + 1.at n=10A292335