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A048527 Primes for which only five iterations of 'Prime plus its digit sum equals a prime' is possible. 0
516493, 1056493, 1427383, 1885943, 3166183, 3805183, 4241593, 6621283, 7646953, 12912283, 17987839, 32106493, 107152093, 120224773 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

EXAMPLE

516493 -> 516521 -> 516541 -> 516563 -> 516589 -> 516623 -> next iteration yields a composite.

CROSSREFS

Cf. A047791, A048519.

Sequence in context: A068816 A087096 A072959 * A157803 A186180 A186172

Adjacent sequences:  A048524 A048525 A048526 * A048528 A048529 A048530

KEYWORD

nonn,base,more

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), May 15 1999.

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Last modified February 14 11:36 EST 2012. Contains 205623 sequences.