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A201022 Primes whose multiplicative digital root is 8. 1

%I #13 Mar 30 2012 19:00:28

%S 29,67,79,83,97,149,163,167,179,181,197,199,229,233,241,263,337,373,

%T 419,421,433,461,491,499,613,617,631,641,661,719,733,761,811,881,883,

%U 919,941,971,991,1129,1163,1181,1229,1237,1291,1327,1361,1373,1381,1399,1423

%N Primes whose multiplicative digital root is 8.

%C Complement of A201023 with respect to A034055.

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

%e Prime 149 is in the sequence because 1*4*9=36, 3*6=18, 1*8=8.

%Y Cf. A201023 (composite numbers whose multiplicative digital root is 8), A034055 (numbers whose multiplicative digital root is 8).

%K nonn,base

%O 1,1

%A _Jaroslav Krizek_, Nov 25 2011

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Last modified May 2 14:34 EDT 2024. Contains 372197 sequences. (Running on oeis4.)