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A338442 Carmichael numbers with 10 prime factors. 2

%I #18 Apr 20 2023 10:24:22

%S 1436697831295441,1493812621027441,2094319836529921,2349991949342401,

%T 2842648863161185,2859959706040801,3455134500424321,3871703982953521,

%U 4177950872896801,4289150794129201,4937378437571041,5071419883911745,5778659093725441,6665161459969441,6682056104892961

%N Carmichael numbers with 10 prime factors.

%H Daniel Suteu, <a href="/A338442/b338442.txt">Table of n, a(n) for n = 1..10000</a>

%H Richard Pinch, <a href="http://www.s369624816.websitehome.co.uk/rgep/cartable.html">Tables relating to Carmichael numbers</a>.

%F Equals A002997 intersect A046314.

%e 1436697831295441 = 11*13*19*29*31*37*41*43*71*127 and 10, 12, 18, 28, 30, 36, 40, 42, 70, 126 all divide 1436697831295440.

%o (PARI) is(n)={omega(n)==10&&is_A002997(n)}

%Y Cf. A002997 (Carmichael numbers).

%Y Cf. A006931 (Least Carmichael number with n prime factors).

%Y Cf. A299710 (Number of terms less than 10^n).

%Y Cf. A087788, A074379, A112428, A112429, A112430, A112431, A112432, A338443 (Carmichael numbers with 3-9 and 11 prime factors).

%K nonn

%O 1,1

%A _Tim Johannes Ohrtmann_, Oct 28 2020

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)