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A180518 Primes that become a different prime under the mapping 0 <=> 3. 1

%I #8 Oct 16 2016 09:50:51

%S 37,101,107,109,131,137,139,307,311,317,337,347,359,367,379,389,397,

%T 401,409,431,439,601,631,709,739,809,839,907,937,1019,1021,1031,1061,

%U 1201,1231,1301,1319,1321,1361,1409,1439,1607,1637,1801,1831,1901,1931,2011

%N Primes that become a different prime under the mapping 0 <=> 3.

%H Harvey P. Dale, <a href="/A180518/b180518.txt">Table of n, a(n) for n = 1..1000</a>

%H <a href="/index/Pri#primes">Index to Primes</a>, Primes that become a different prime under some mapping.

%t fQ[n_] := Block[{id = IntegerDigits@n}, (MemberQ[id, 0] || MemberQ[id, 3]) && PrimeQ[ FromDigits[ id /. {0 -> 3, 3 -> 0}] ]]; Select[ Prime@ Range@ 350, fQ]

%t dp03Q[n_]:=Module[{c=FromDigits[IntegerDigits[n]/.{0->3,3->0}]},c!=n && PrimeQ[ c]]; Select[Prime[Range[350]],dp03Q] (* _Harvey P. Dale_, Oct 16 2016 *)

%Y Cf. A171016, A175791, A180517 thru A180559, A175789, A180560, A180561.

%K base,nonn

%O 1,1

%A _Zak Seidov_ and _Robert G. Wilson v_, Sep 09 2010

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Last modified June 3 07:50 EDT 2024. Contains 373054 sequences. (Running on oeis4.)