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Search: id:A137612
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| A137612 |
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Greater of a pair of closest (n-digit) distinct primes that add up to 10^n. |
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+0
3
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| 7, 53, 509, 5081, 50123, 500057, 5000087, 50000243, 500000069, 5000000063, 50000000189, 500000000231, 5000000001569, 50000000000381, 500000000000231, 5000000000001443, 50000000000001113, 500000000000000321
(list; graph; listen)
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OFFSET
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1,1
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PROGRAM
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(PARI) local(t); n=10^n; t=nextprime(n/2+1); while(!isprime(n-t), t=nextprime(t+1)); t [From Charles R Greathouse IV, Sep 29 2008]
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CROSSREFS
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Cf. A137611.
Sequence in context: A142981 A120272 A057180 this_sequence A092802 A062207 A116202
Adjacent sequences: A137609 A137610 A137611 this_sequence A137613 A137614 A137615
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KEYWORD
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nonn,base
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AUTHOR
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Lekraj Beedassy (blekraj(AT)yahoo.com), Jan 29 2008
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EXTENSIONS
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a(7)-a(30) from Charles R Greathouse IV, Sep 29 2008
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