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A323536 Primes p such that p - k and p + k have the same number of prime factors (with multiplicity), for k = 1..7. 3
91289867, 247780811, 350499731, 353523083, 394923913, 418273259, 441459853, 452876747, 645159257, 702723851, 718541749, 728741617, 729758423, 776424947, 791860151, 1191670069, 1289075413, 1457951063, 1508119211, 1527473449, 1563808777, 1568639509, 1611010391, 1662823523, 1705045429, 1801303463, 1856184949, 1869622537, 1973952949, 2003664181, 2185051189, 2204016173, 2310441383, 2331375133, 2439952297, 2448065387 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..36.

FORMULA

{primes p: A001222(p-k)=A001222(p+k) for all k=1..7}.

EXAMPLE

p=91289867 is in the sequence because A001222(p-1)=A001222(p+1) = 4, A001222(p-2)=A001222(p+2)=3, A001222(p-3)=A001222(p+3)=5 etc, pairwise equal.

CROSSREFS

Subsequence of A323498.

Cf. A115103.

Sequence in context: A069318 A172573 A015367 * A216009 A034643 A186051

Adjacent sequences: A323533 A323534 A323535 * A323537 A323538 A323539

KEYWORD

nonn

AUTHOR

Zak Seidov, Jan 17 2019

STATUS

approved

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Last modified December 8 20:46 EST 2022. Contains 358698 sequences. (Running on oeis4.)