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A103463
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Length of the largest left-truncatable prime (in base n).
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4
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0, 3, 6, 6, 17, 7, 15, 10, 24, 9, 32, 8, 26, 22, 25, 11, 43, 14, 37, 27, 37, 17, 53, 20, 39, 28, 46, 19
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OFFSET
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2,2
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COMMENTS
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The next term (base 30) will be difficult to calculate because there are over a trillion left-truncatable primes in that base for each of digit-lengths 29-34. Nevertheless, the largest left-truncatable prime in this base can be estimated by theory to have a length of about 82. [Hans Havermann, Aug 16 2011]
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REFERENCES
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Angell, I. O.; Godwin, H. J.: On Truncatable Primes. Mathematics of Computation vol. 31 (1977), no. 137, pp. 265-267.
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LINKS
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Table of n, a(n) for n=2..29.
Index entries for sequences related to truncatable primes
Martin Renner, Table of n, a(n) for n = 2..53 (with some question marks)
Eric Weisstein: Truncatable Prime.
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CROSSREFS
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Cf. A076623, A103443.
Sequence in context: A119306 A107972 A036252 * A223048 A181372 A168426
Adjacent sequences: A103460 A103461 A103462 * A103464 A103465 A103466
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KEYWORD
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nonn,base
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AUTHOR
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Martin Renner, Mar 21 2005, Feb 20 2008, Apr 20 2008
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EXTENSIONS
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a(24)-a(29) from Hans Havermann, Aug 16 2011
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STATUS
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approved
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