A201017 - OEIS

%I #11 Mar 30 2012 19:00:28

%S 5,53,151,157,359,557,571,593,751,953,1151,1153,1511,1531,1553,1571,

%T 1579,1597,1759,3511,3533,5113,5153,5171,5179,5197,5333,5351,5531,

%U 5711,5791,7151,7159,7559,7577,7591,7757,7951,9157,11351,11579,11593,11597,11953

%N Primes whose multiplicative digital root is 5.

%C Complement of A201018 with respect to A034052.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/MultiplicativeDigitalRoot.html">Multiplicative Digital Root</a>

%e Prime 157 is in the sequence because 1*5*7=35, 3*5=15, 1*5=5.

%Y Cf. A201018 (composite numbers whose multiplicative digital root is 5), A034052 (numbers whose multiplicative digital root is 5).

%K nonn,base

%O 1,1

%A _Jaroslav Krizek_, Nov 25 2011