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The smallest nonpalindromic number that shares n or more distinct prime factors with the prime factors of its reverse.
1

%I #12 May 03 2024 08:31:15

%S 10,12,24,264,8580,24024,2168166,67897830,2448684420

%N The smallest nonpalindromic number that shares n or more distinct prime factors with the prime factors of its reverse.

%C When a number is reversed any leading 0's are dropped; the resulting number may be palindromic.

%e a(3) = 264 as 264 = 2^3 * 3 * 11 and 264 in reverse is 462 = 2 * 3 * 7 * 11, which share three prime factors 2, 3, and 11.

%Y Cf. A335645, A046399, A027746, A029742, A372384.

%K nonn,base,more

%O 0,1

%A _Scott R. Shannon_, May 02 2024