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A120829 Primes with n consecutive digits descending beginning with the digit four. 2
2, 64, 176, 1502, 4676, 6933, 8173 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Digits are in descending order beginning with 1 and after 0 comes 9.

EXAMPLE

2 is a term since 43 is a prime.

MATHEMATICA

fQ[n_] := PrimeQ@ FromDigits@ Mod[5-Range@n, 10]; lst = {}; Do[ If[fQ@n, AppendTo[lst, n]; Print@n], {n, 10000}]; lst

CROSSREFS

Cf. A120804, A120823, A120828.

Sequence in context: A109667 A004853 A064010 * A120121 A047707 A134939

Adjacent sequences:  A120826 A120827 A120828 * A120830 A120831 A120832

KEYWORD

base,hard,nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 05 2006

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.