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A119645 Product of consecutive prime number of primes. 1

%I #8 Feb 18 2015 11:03:00

%S 6,385,2800733,297194980009,1334735302498393188221,

%T 11619338480236377089380289447,

%U 10619210758832202863571310834864572265523,809071570100634918731540230003790633463788552651

%N Product of consecutive prime number of primes.

%e a(1) = 2 * 3 = 6 (the product of the first 2 primes).

%e a(2) = 5 * 7 * 11 = 385 (the product of the next 3 primes).

%e a(3) = 13 * 17 * 19 * 23 * 29 = 2800733 (product of next 5 primes).

%e a(4) = 31 * 37 * 41 * 43 * 47 * 53 * 59 = 297194980009 (product next 7 primes).

%t s[n_] := Sum[Prime[i], {i, n}]; Table[Product[Prime[j], {j, s[n - 1] + 1, s[n]}], {n, 8}] (* _Arkadiusz Wesolowski_, May 21 2013 *)

%K easy,nonn

%O 1,1

%A _Walter Carlini_, Jul 28 2006

%E a(4) corrected by _Arkadiusz Wesolowski_, May 21 2013

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Last modified August 11 13:26 EDT 2024. Contains 375069 sequences. (Running on oeis4.)