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Search: id:A034817
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| A034817 |
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Concatenations C1 and C2 and C3 are all prime (see the comment lines). |
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+0
1
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| 63, 333, 621, 3339, 4557, 8127, 13977, 16827, 18177, 21921, 27393, 34989, 40023, 40047, 46917, 59727, 61203, 79467, 94767, 95079, 100821, 102771, 104859, 106527, 113883, 114123, 143433, 147123, 156201, 158409, 160149, 196737, 209277, 209961
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OFFSET
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0,1
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COMMENT
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C1 = 'prevprime(n) followed by n'
C2 = 'n followed by nextprime(n)'
C3 = 'prevprime(n) followed by n followed by nextprime(n)'
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EXAMPLE
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n=95079 -> previous prime is 95071, next prime is 95083, thus '9501795079' and '9507995083' and '950719507995083' are all three primes.
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CROSSREFS
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Cf. A034808-A034821.
Sequence in context: A158684 A063398 A138833 this_sequence A038993 A068022 A131993
Adjacent sequences: A034814 A034815 A034816 this_sequence A034818 A034819 A034820
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KEYWORD
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nonn,base
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com), Oct 15 1998.
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