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A067845 Largest n-digit pseudoprime (to base 2). 7
645, 8911, 93961, 997633, 9995671, 99971821, 999828727, 9999109081, 99983971501, 999986341201, 9999946514845, 99999856404001, 999994510007533, 9999999191658001, 99999984319096601, 999999995115616561, 9999999995077192591 (list; graph; refs; listen; history; text; internal format)
OFFSET
3,1
LINKS
EXAMPLE
a(2)=8911, so largest pseudoprime (base 2) of 4 digits is 8911.
CROSSREFS
Sequence in context: A216364 A063844 A265684 * A057942 A230488 A228575
KEYWORD
hard,nonn,base
AUTHOR
Shyam Sunder Gupta, Feb 14 2002
EXTENSIONS
More terms from Farideh Firoozbakht, Jan 11 2007
a(17)-a(19) from Amiram Eldar, Jun 30 2019
STATUS
approved

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Last modified February 24 20:59 EST 2024. Contains 370307 sequences. (Running on oeis4.)