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Search: id:A155075
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| A155075 |
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Primes with twin identical digits. |
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+0
1
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| 11, 101, 113, 131, 151, 181, 191, 199, 211, 223, 227, 229, 233, 277, 311, 313, 331, 337, 353, 373, 383, 433, 443, 449, 499, 557, 577, 599, 661, 677, 727, 733, 757, 773, 787, 797, 811, 877, 881, 883, 887, 911, 919, 929, 977, 991, 997, 1009, 1013, 1019, 1021
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Does this sequence include or reject primes in which a digit occurs three time, like 1117, 1151, 1171, 1181, 1511 or 1777 (cf. A073064)? [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 25 2009]
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CROSSREFS
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Cf. A000040.
Sequence in context: A091366 A158051 A073064 this_sequence A062697 A062696 A113654
Adjacent sequences: A155072 A155073 A155074 this_sequence A155076 A155077 A155078
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KEYWORD
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nonn,base
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AUTHOR
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Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jan 19 2009
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