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A103548
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a(n) is the largest n-digit zeroless prime such that the sum of the two numbers that result from splitting a(n) between any two of its digits is a distinct prime.
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OFFSET
| 2,1
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COMMENTS
| There is no such 8-digit prime, i.e. the sequence ends at a(7) -- although in theory a(n) might exist for some n>8. [From Hagen von Eitzen (math(AT)von-eitzen.de), Jun 02 2009]
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EXAMPLE
| a(4)=8821. 8+821=829, which is prime. 88+21=109, which is prime. 882+1=883, which is prime.
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CROSSREFS
| Sequence in context: A063654 A069764 A053580 * A097155 A197348 A158716
Adjacent sequences: A103545 A103546 A103547 * A103549 A103550 A103551
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KEYWORD
| base,fini,full,nonn
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AUTHOR
| Ray G. Opao (1260(AT)email.com), Mar 23 2005
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EXTENSIONS
| Last terms a(6) and a(7) from Hagen von Eitzen (math(AT)von-eitzen.de), Jun 02 2009
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