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A119889 Prime soloist : prime number which is no member of any prime ensemble. 4
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified February 2 14:00 EST 2023. Contains 360021 sequences. (Running on oeis4.)