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A048526
Primes for which only four iterations of 'Prime plus its digit sum equals a prime' are possible.
3
37783, 85601, 259631, 268721, 350941, 371939, 378901, 516521, 665111, 733331, 883331, 967781, 1047929, 1056521, 1081721, 1258811, 1427411, 1480573, 1515929, 1584901, 1614929, 1842131, 1875311, 1885981, 2027801, 2044873, 2450531
OFFSET
1,1
LINKS
EXAMPLE
prime 37783 -> 37783 + (3+7+7+8+3) = prime 37811 -> 37811 + (3+7+8+1+1) = prime 37831 -> 37831 + (3+7+8+3+1) = prime 37853 -> 37853 + (3+7+8+5+3) = prime 37879 -> next iteration yields composite 37913.
CROSSREFS
Sequence in context: A320208 A320217 A236883 * A190320 A250150 A345818
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, May 15 1999
EXTENSIONS
Changed offset by Lars Blomberg, Dec 05 2013
STATUS
approved