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A089701 Largest n-digit member of A089699. 2
6, 82, 996, 9966, 99922, 999916, 9999942, 99999846, 999999936, 9999999726, 99999999598, 999999999576, 9999999999658, 99999999999928, 999999999999576, 9999999999999936, 99999999999999456, 999999999999999486 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

MAPLE

for d from 1 to 25 do for n from 10^d-1 by -1 to 10^(d-1) do m:=mul(j, j=convert(n, base, 10)): if isprime(m+1) and isprime(n+1) then printf("%d, ", n): break fi od od: # C. Ronaldo

CROSSREFS

Cf. A089699, A089700.

Sequence in context: A135624 A222197 A089397 * A251584 A068253 A188806

Adjacent sequences:  A089698 A089699 A089700 * A089702 A089703 A089704

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Nov 10 2003

EXTENSIONS

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Dec 25 2004

STATUS

approved

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Last modified September 22 02:48 EDT 2021. Contains 347605 sequences. (Running on oeis4.)