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Search: id:A133187
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| A133187 |
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Prime numbers of the form q*10^(floor(log(p))+1)+p, where p < q are primes also. |
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1
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| 53, 73, 113, 137, 173, 193, 197, 233, 293, 313, 317, 373, 433, 593, 613, 617, 673, 677, 733, 797, 977, 1013, 1033, 1093, 1097, 1277
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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These numbers are called Caesar primes because the birth date of Julius Caesar (July 13th) provides one example of such a number, i.e. p=7 and q=13 give the prime 13*10+7=137.
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CROSSREFS
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Adjacent sequences: A133184 A133185 A133186 this_sequence A133188 A133189 A133190
Sequence in context: A045807 A007644 A136073 this_sequence A057667 A107309 A039389
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KEYWORD
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nonn
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AUTHOR
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Tom Mueller (muel4503(AT)uni-trier.de), Dec 17 2007
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