The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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

%I

%S 2,3,5,7,11,13,17,23,37,47,59,61,179,181,191,193,239,241,359,577,719,

%T 839,1259,1297,2521,2879,5039,6299,6301,6481,6719,7559,7561,10079,

%U 12289,14401,15121,15359,15361,20161,25919,32401,44101,45361,55439,55441

%N 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.)

%e 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.

%Y A007416, A152246

%K nonn

%O 1,1

%A _Leroy Quet_, Nov 30 2008

%E Extended by _Ray Chandler_, Dec 05 2008

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 26 23:42 EDT 2021. Contains 347673 sequences. (Running on oeis4.)