A119889 Prime soloist : prime number which is no member of any prime ensemble.

3, 13, 17, 19, 31, 37, 53, 59, 67, 71, 73, 79, 89, 97, 103, 107, 109, 127, 139, 149, 157, 163, 167, 179, 181, 193, 197, 199, 211, 229, 233, 239, 251, 257, 269, 271, 277, 283, 293, 307, 337, 347, 349, 359, 367, 373, 379, 383, 389, 397, 409, 419, 431, 433, 439

Offset

1,1

Links

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

L. Stevens, Prime ensembles

Example

17 is in the sequence because the sum of the digits (8) is a composite number. 449 is in the sequence because the sum of the digits (17) is another prime soloist.

Crossrefs

Cf. A119890, A119891, A119892.

Sequence in context: A042589 A218364 A107922 * A038956 A309291 A343123

Adjacent sequences: A119886 A119887 A119888 * A119890 A119891 A119892

Keyword

base,nonn

Author

Luc Stevens (lms022(AT)yahoo.com), May 27 2006

Extensions

Corrected by T. D. Noe, Oct 25 2006

Status

approved