|
| |
|
|
A133836
|
|
Largest prime with number of decimal digits equal to n-th prime.
|
|
1
| |
|
|
97, 997, 99991, 9999991, 99999999977, 9999999999971, 99999999999999997, 9999999999999999961, 99999999999999999999977, 99999999999999999999999999973, 9999999999999999999999999999973
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
FORMULA
| a(n)=A003618(A000040(n)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 30 2008
|
|
|
EXAMPLE
| 97 is the largest prime with 2 digits.
997 is the largest prime with 3 digits.
99991 is the largest prime with 5 digits.
|
|
|
MAPLE
| A003618 := proc(n) prevprime(10^n) ; end: A133836 := proc(n) A003618(ithprime(n)) ; end: for n from 1 to 13 do printf("%d, ", A133836(n) ) ; od: - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 30 2008
|
|
|
CROSSREFS
| Cf. A000040, A064490.
Sequence in context: A127828 A186075 A087596 * A038532 A092272 A162542
Adjacent sequences: A133833 A133834 A133835 * A133837 A133838 A133839
|
|
|
KEYWORD
| nonn,base
|
|
|
AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 06 2008
|
|
|
EXTENSIONS
| More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 30 2008
|
| |
|
|
