660872395

Appears in sequences

• Numbers k such that four (or more) consecutive Ramanujan tau numbers are congruent mod 691, or A000594(k) == A000594(k+1) == A000594(k+2) == A000594(k+3) mod 691, or A046694(k) = A046694(k+1) = A046694(k+2) = A046694(k+3).at n=17A337916