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A072722 Smallest of 6 consecutive integers divisible respectively by 6 consecutive primes. 1

%I #7 Mar 23 2021 05:20:44

%S 788,30818,60848,90878,120908,150938,180968,210998,210999,241028,

%T 271058,301088,331118,361148,391178,421208,451238,466254,466255,

%U 481268,511298,541328,571358,601388,631418,661448,691478,721508,721509,751538

%N Smallest of 6 consecutive integers divisible respectively by 6 consecutive primes.

%H Amiram Eldar, <a href="/A072722/b072722.txt">Table of n, a(n) for n = 1..10000</a>

%e 30818 is a term as 30818, 30818, 30819, 30820, 30821 and 30822 are divisible by 2, 3, 5, 7 and 11 respectively.

%t f[n_Integer] := Flatten[ Table[ #1] & @@@ FactorInteger[n]]; NextPrim[n_] := Block[ {k = n + 1}, While[ !PrimeQ[k], k++ ]; k]; Do[ p = f[ n ]; l = Length[ p ]; t = Table[n + i, {i, 0, 5} ]; k = 1; While[ k < l + 1 && Union[ Mod[ t, NestList[ NextPrim, p[[ k ]], 5 ]]] != {0}, k++ ]; If[ k < l + 1, Print[ n ]], {n, 2, 811597} ]

%Y Cf. A073606, A073607, A072555, A073754, A073756, A072562.

%K nonn

%O 1,1

%A _Robert G. Wilson v_, Aug 07 2002

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Last modified April 16 18:22 EDT 2024. Contains 371750 sequences. (Running on oeis4.)