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A152245 Primes p where |p-m| = 1, where m is any of the smallest positive integers with their number of divisors. (m belongs to sequence A007416.) 1
2, 3, 5, 7, 11, 13, 17, 23, 37, 47, 59, 61, 179, 181, 191, 193, 239, 241, 359, 577, 719, 839, 1259, 1297, 2521, 2879, 5039, 6299, 6301, 6481, 6719, 7559, 7561, 10079, 12289, 14401, 15121, 15359, 15361, 20161, 25919, 32401, 44101, 45361, 55439, 55441 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..46.

EXAMPLE

The smallest positive integer with 8 divisors is 24. 24 - 1 = 23 is prime. But 24 + 1 = 25 is composite. So 23 is in the sequence, while 25 is not.

CROSSREFS

A007416, A152246

Sequence in context: A293199 A268812 A283562 * A007693 A174048 A249644

Adjacent sequences:  A152242 A152243 A152244 * A152246 A152247 A152248

KEYWORD

nonn

AUTHOR

Leroy Quet, Nov 30 2008

EXTENSIONS

Extended by Ray Chandler, Dec 05 2008

STATUS

approved

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Last modified July 24 14:51 EDT 2021. Contains 346273 sequences. (Running on oeis4.)