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A171004 Numbers which are the lunar product of lunar primes in more than one way. 2

%I #33 Aug 06 2014 16:10:20

%S 1119,1129,1139,1149,1159,1169,1179,1189,1191,1192,1193,1194,1195,

%T 1196,1197,1198,1199,1219,1319,1419,1519,1619,1719,1819,1911,1912,

%U 1913,1914,1915,1916,1917,1918,1919,2191,2229,2239,2249,2259,2269,2279,2289,2292,2293,2294,2295,2296,2297,2298,2299,2329,2429,2529,2629,2729,2829,2911,2922,2923,2924,2925,2926,2927,2928

%N Numbers which are the lunar product of lunar primes in more than one way.

%H David Applegate, <a href="/A171004/b171004.txt">Table of n, a(n) for n = 1..6679</a>

%H David Applegate, <a href="/A171004/a171004_3.txt">Factorizations of all numbers in the b-file</a>

%H David Applegate, <a href="/A171004/a171004_4.txt">Factorizations of all 9-ish numbers with <= 5 digits into products of lunar primes</a>

%H D. Applegate, M. LeBrun and N. J. A. Sloane, <a href="http://arxiv.org/abs/1107.1130">Dismal Arithmetic</a> [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing]

%H <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a>

%e 1119 = 19*109 = 19*19*19.

%e 1129 = 19*129 = 29*109 = 19*19*29.

%Y Cf. A087097, A133626, A169977.

%K nonn,base

%O 1,1

%A _N. J. A. Sloane_, Sep 01 2010

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)