A119960 Positive integers with prime number of characters in their English names, including spaces and hyphens.

1, 2, 3, 6, 7, 8, 10, 15, 16, 24, 25, 29, 34, 35, 39, 40, 43, 47, 48, 50, 53, 57, 58, 60, 63, 67, 68, 70, 71, 72, 73, 76, 77, 78, 84, 85, 89, 94, 95, 99

Offset

1,2

Comments

Differs due to hyphens and spaces from A072685 Positive integers whose English names contain a prime number of letters. Primes with prime number of characters in their English names, including spaces and hyphens, are a subset of this beginning: 2, 3, 7, 29, 43, 47, 53, 67, 71, 73.

Links

Table of n, a(n) for n=1..40.

Formula

n such that A052360(n) is prime. n such that A052360(n) is in A000040.

Mathematica

Select[Range[99], PrimeQ[ StringLength@ IntegerName[#, "Words"]] &] (* Giovanni Resta, Jun 13 2016 *)

Crossrefs

Cf. A000040, A052360, A005589, A052362-A052363, A072685.

Sequence in context: A221977 A001162 A072685 * A273265 A015841 A371276

Adjacent sequences: A119957 A119958 A119959 * A119961 A119962 A119963

Keyword

easy,nonn,word

Author

Jonathan Vos Post, Aug 02 2006

Extensions

Missing a(1) and more terms from Giovanni Resta, Jun 13 2016

Status

approved