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 A060330 Primes the sum of five consecutive composite numbers. 3

%I

%S 37,53,67,83,97,157,293,307,353,367,503,547,683,743,757,907,953,967,

%T 983,997,1193,1553,1567,1733,1747,2153,2617,2843,2857,3083,3203,3217,

%U 3307,4057,4133,4283,4297,5107,5153,5167,5303,6143,6397,6607,7253,7417

%N Primes the sum of five consecutive composite numbers.

%t composite[ n_Integer ] := (k = n + PrimePi[ n ] + 1; While[ k - PrimePi[ k ] - 1 != n, k++ ]; k); a = {}; Do[ p = composite[ n ] + composite[ n + 1 ] + composite[ n + 2 ] + composite[ n + 3 ] + composite[ n + 4 ]; If[ PrimeQ[ p ], a = Append[ a, p ] ], {n, 1, 1500} ]; a

%K nonn

%O 1,1

%A _Robert G. Wilson v_, Mar 30 2001

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Last modified December 4 12:08 EST 2021. Contains 349489 sequences. (Running on oeis4.)