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A110718
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Beginning with 7, concatenation of n successive numbers such that every partial concatenation is a prime.
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3
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7, 1011, 123, 30313233, 127128129130131, 363738394041, 78910111213, 11661167116811691170117111721173, 251252253254255256257258259, 168169170171172173174175176177, 439440441442443444445446447448449
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OFFSET
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1,1
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LINKS
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EXAMPLE
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7,71011,71011123,... are all prime.
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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