A171004 Numbers which are the lunar product of lunar primes in more than one way.
1119, 1129, 1139, 1149, 1159, 1169, 1179, 1189, 1191, 1192, 1193, 1194, 1195, 1196, 1197, 1198, 1199, 1219, 1319, 1419, 1519, 1619, 1719, 1819, 1911, 1912, 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
Offset: 1
Examples
1119 = 19*109 = 19*19*19. 1129 = 19*129 = 29*109 = 19*19*29.
Links
- David Applegate, Table of n, a(n) for n = 1..6679
- David Applegate, Factorizations of all numbers in the b-file
- David Applegate, Factorizations of all 9-ish numbers with <= 5 digits into products of lunar primes
- D. Applegate, M. LeBrun and N. J. A. Sloane, Dismal Arithmetic [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing]
- Index entries for sequences related to dismal (or lunar) arithmetic