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A137612 Greater of a pair of closest (n-digit) distinct primes that add up to 10^n. 2
7, 53, 509, 5081, 50123, 500057, 5000087, 50000243, 500000069, 5000000063, 50000000189, 500000000231, 5000000001569, 50000000000381, 500000000000231, 5000000000001443, 50000000000001113, 500000000000000321 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

PROG

(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]

CROSSREFS

Cf. A137611.

Sequence in context: A142981 A120272 A057180 * A092802 A062207 A194929

Adjacent sequences:  A137609 A137610 A137611 * A137613 A137614 A137615

KEYWORD

nonn,base

AUTHOR

Lekraj Beedassy (blekraj(AT)yahoo.com), Jan 29 2008

EXTENSIONS

a(7)-a(30) from Charles R Greathouse IV, Sep 29 2008

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Last modified February 16 03:44 EST 2012. Contains 205860 sequences.