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A067845
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Largest n-digit pseudoprime (in base 2).
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3
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645, 8911, 93961, 997633, 9995671, 99971821, 999828727, 9999109081, 99983971501, 999986341201, 9999946514845, 99999856404001, 999994510007533, 9999999191658001
(list; graph; refs; listen; history; internal format)
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OFFSET
| 3,1
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LINKS
| Patrick De Geest, Smallest n-digit Pseudoprimes
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EXAMPLE
| a(2)=8911, so largest pseudoprime (base 2) of 4 digits is 8911.
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CROSSREFS
| Cf. A062568, A062852.
Cf. A001567, A068216, A001262, A062568, A062852.
Sequence in context: A168626 A100873 A063844 * A057942 A179963 A187434
Adjacent sequences: A067842 A067843 A067844 * A067846 A067847 A067848
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KEYWORD
| hard,more,nonn
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AUTHOR
| Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 14 2002
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EXTENSIONS
| More terms from Farideh Firoozbakht (mymontain(AT)yahoo.com), Jan 11 2007
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