A115670 - OEIS

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A115670

Semiprimes (A001358) whose digit reversal is prime.

%I #4 Nov 25 2015 22:24:56

%S 14,34,35,38,74,91,95,106,118,119,133,134,142,145,146,166,194,301,305,

%T 334,346,358,361,362,365,371,377,382,386,391,395,703,706,713,721,731,

%U 745,746,749,755,758,763,778,779,785,791,793,799,901,905,914,917,922

%N Semiprimes (A001358) whose digit reversal is prime.

%e 35=5*7 is semiprime and 53 is prime.

%Y Cf. A001358, A083815, A085778, A097393.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Jan 31 2006