The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #14 Aug 27 2020 19:43:00
%S 2677277333530800000,2992251137475600000,3164055030536400000,
%T 3501054974617200000,3536296798834800000,3622198745365200000,
%U 3748188266943120000,4015916000296200000,4189151592465840000,4207150095548400000,4280780335431600000,4373290124002800000,4429677042750960000
%N Numbers with exactly seven distinct exponents in their prime factorization, or seven distinct parts in their prime signature.
%H David A. Corneth, <a href="/A324207/b324207.txt">Table of n, a(n) for n = 1..10000</a>
%e 2677277333530800000 = 2^7 * 3^6 * 5^5 * 7^4 * 11^3 * 13^2 * 17 is in the sequence. There are exactly 7 distinct exponents; 1 through 7 in it.
%o (PARI) is(n) = #Set(factor(n)[, 2]) == 7
%Y Cf. A001221, A001222, A006939, A051270, A059404, A071625, A118914, A181819, A182855, A323014, A323022, A323024, A323025, A323056.
%K nonn,easy
%O 1,1
%A _David A. Corneth_, Feb 17 2019