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A254519
Largest n-digit pseudoprime to base 3.
0
91, 949, 8911, 97567, 997633, 9959413, 99971821, 999271891, 9999326731, 99997244929, 999989423051, 9999899578441, 99999695823301, 999999050050321, 9999997295187859, 99999997019370001
OFFSET
2,1
PROG
(PARI) for(n=2, 20, k=10^n; while(ispseudoprime(k) || Mod(3, k)^(k-1)!=1, k--); print1(k, ", "))
CROSSREFS
Sequence in context: A085952 A129255 A093291 * A185375 A036526 A170955
KEYWORD
nonn,hard,base,more
AUTHOR
Felix Fröhlich, Jan 31 2015
STATUS
approved