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A165319 Primes p where the number of divisors of p+1 is a power of 2. 2
2, 5, 7, 13, 23, 29, 37, 41, 53, 61, 73, 101, 103, 109, 113, 127, 137, 151, 157, 167, 173, 181, 193, 229, 257, 263, 269, 277, 281, 311, 313, 317, 353, 373, 383, 389, 397, 401, 409, 421, 433, 439, 457, 461, 487, 509, 541, 569, 593, 601, 613, 617, 631, 641, 653 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..55.

CROSSREFS

A165318, A165320

Cf. A008329. [From R. J. Mathar, Sep 20 2009]

Sequence in context: A082182 A032719 A045355 * A094712 A095281 A106889

Adjacent sequences:  A165316 A165317 A165318 * A165320 A165321 A165322

KEYWORD

nonn

AUTHOR

Leroy Quet, Sep 14 2009

EXTENSIONS

Extended by R. J. Mathar, Sep 20 2009

STATUS

approved

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Last modified May 21 09:09 EDT 2013. Contains 225478 sequences.