485298

Appears in sequences

• Numbers k such that gpf(k^2+1)/k sets a new record of low value, where gpf(k) is the greatest prime dividing k (A006530).at n=33A173561
• Largest number k such that the greatest prime factor of k^2+1 is A002313(n), the n-th prime not congruent to 3 mod 4.at n=7A185389
• Irregular triangle of numbers k such that A002313(n), the n-th prime not congruent to 3 mod 4, is the largest prime factor of k^2 + 1.at n=56A223702