This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A201017 #12 Feb 16 2025 08:33:16 %S A201017 5,53,151,157,359,557,571,593,751,953,1151,1153,1511,1531,1553,1571, %T A201017 1579,1597,1759,3511,3533,5113,5153,5171,5179,5197,5333,5351,5531, %U A201017 5711,5791,7151,7159,7559,7577,7591,7757,7951,9157,11351,11579,11593,11597,11953 %N A201017 Primes whose multiplicative digital root is 5. %C A201017 Complement of A201018 with respect to A034052. %H A201017 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MultiplicativeDigitalRoot.html">Multiplicative Digital Root</a> %e A201017 Prime 157 is in the sequence because 1*5*7=35, 3*5=15, 1*5=5. %Y A201017 Cf. A201018 (composite numbers whose multiplicative digital root is 5), A034052 (numbers whose multiplicative digital root is 5). %K A201017 nonn,base %O A201017 1,1 %A A201017 _Jaroslav Krizek_, Nov 25 2011