

A163648


Primes p with a prime number of syllables in their name in American English.


4



7, 11, 13, 17, 19, 23, 29, 31, 41, 43, 53, 59, 61, 83, 89, 107, 113, 127, 137, 157, 167, 173, 179, 197, 227, 257, 271, 307, 313, 337, 347, 367, 373, 379, 397, 419, 457, 467, 479, 487, 547, 557, 571, 587, 607, 613, 619, 647, 673, 701, 709, 733, 739, 743, 751
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OFFSET

1,1


COMMENTS

The word "and" is excluded, 101 is "one hundred one" rather than "one hundred and one."
See A231073 and A231075 for the analogs counting words resp. letters.  M. F. Hasler, Nov 03 2013


LINKS

Table of n, a(n) for n=1..55.
Index to OEIS: sequences related to English words for n


FORMULA

{p in A000040 such that A075774(p) is in A000040}.


EXAMPLE

a(1) = 7, which has a prime number, 2, of syllables seven. a(2) = 11, which has a prime number, 3, of syllables eleven.


PROG

(PARI) forprime(p=1, 900, isprime(A075774(p))&&print1(p", ")) \\  M. F. Hasler, Nov 03 2013
(PARI) is(p)=isprime(A075774(p))&&isprime(p) \\  M. F. Hasler, Nov 03 2013


CROSSREFS

Cf. A000040, A075774, A164043.
Sequence in context: A078873 A020603 A283532 * A135776 A067831 A086998
Adjacent sequences: A163645 A163646 A163647 * A163649 A163650 A163651


KEYWORD

word,easy,nonn


AUTHOR

Jonathan Vos Post, Aug 02 2009


EXTENSIONS

Extended and edited by Charles R Greathouse IV, Nov 02 2009
Values doublechecked by M. F. Hasler, Nov 03 2013


STATUS

approved



