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Search: id:A135112
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| A135112 |
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Integers n such that 10^n+93 is a prime number. |
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+0
1
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OFFSET
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1,2
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COMMENT
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No others below 1,000.
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EXAMPLE
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4 is a member: 10^4+93 = 10000+93 = 10093, which is a prime number.
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MATHEMATICA
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q=93; s=""; For[a=q, a<=q, s="10^n+"<>ToString[a]<>":"; n=0; For[i=1, i< 10^3, If[PrimeQ[10^i+a], n=1; s=s<>ToString[i]<>", "]; i++ ]; If[n>0, Print[s]]; a++ ] - Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 29 2008
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CROSSREFS
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Cf. A095688, A108052, A108050, A108312, A107083, A108049, A108054.
Adjacent sequences: A135109 A135110 A135111 this_sequence A135113 A135114 A135115
Sequence in context: A086432 A076018 A076017 this_sequence A082865 A140598 A129920
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KEYWORD
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hard,more,nonn
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AUTHOR
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Julien Peter Benney (jpbenney(AT)gmail.com), Feb 12 2008
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EXTENSIONS
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1 added by Vladimir Orlovsky, May 02 2008
a(4) corrected by Vladimir Orlovsky, May 02 2008
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