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Search: id:A068683
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| A068683 |
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Primes formed by the concatenation p,q,p where p and q are successive primes and p>q. |
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+0
3
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| 757, 131113, 171317, 231923, 312931, 474347, 978997, 10197101, 107103107, 127113127, 139137139, 151149151, 167163167, 367359367, 421419421, 433431433, 461457461, 617613617, 643641643, 701691701, 863859863, 911907911, 991983991
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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171317 is a prime which is the concatenation of 17, 13 and 17.
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CROSSREFS
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Sequence in context: A037191 A035853 A101833 this_sequence A104336 A105547 A001293
Adjacent sequences: A068680 A068681 A068682 this_sequence A068684 A068685 A068686
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 02 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 26 2002
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