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A112432 Carmichael numbers equal to the product of 9 primes. 9

%I #8 Jun 25 2019 10:47:02

%S 9746347772161,11537919313921,11985185775745,14292786468961,

%T 23239986511105,24465723528961,26491881502801,27607174936705,

%U 30614445878401,30912473358481,34830684315505,51620128928641

%N Carmichael numbers equal to the product of 9 primes.

%H Amiram Eldar, <a href="/A112432/b112432.txt">Table of n, a(n) for n = 1..10000</a>

%e a(1) = 9746347772161 = 7*11*13*17*19*31*37*41*641.

%o (PARI) is(n)={omega(n)==9&&is_A002997(n)} \\ _M. F. Hasler_, Apr 14 2015

%Y Cf. A002997, A087788, A141711, A074379, A112428, A112429, A112430, A112431, A006931.

%K easy,nonn

%O 1,1

%A _Shyam Sunder Gupta_, Dec 11 2005

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Last modified April 25 07:53 EDT 2024. Contains 371964 sequences. (Running on oeis4.)