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A110720
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Beginning with 5, concatenation of n successive numbers such that every partial concatenation is a prime.
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1
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5, 23, 353637, 18192021, 7576777879, 67891011, 71727374757677, 12121213121412151216121712181219, 5678910111213, 1194119511961197119811991200120112021203
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 5,523,523353637,... are all prime.
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CROSSREFS
| Cf. A110714, A110715, A110716, A110717, A110718, A110719, A110721.
Sequence in context: A199586 A174106 A120660 * A200822 A112613 A056234
Adjacent sequences: A110717 A110718 A110719 * A110721 A110722 A110723
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KEYWORD
| base,hard,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 05 2005
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EXTENSIONS
| More terms from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Jul 11 2010
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