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A089825 Smallest n such that the least witness function W(n) = m, as m runs through the values in A089105. 2
9, 2047, 1373653, 134670080641, 25326001, 307768373641, 3215031751, 1502401849747176241, 2152302898747, 1478868544880821, 3034679039109989281, 3474749660383 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
The least witness of 3825123056546413051 is 37, and no smaller number has 37 as its least witness. [Charles R Greathouse IV, Aug 14 2010]
REFERENCES
R. Crandall and C. Pomerance, Prime Numbers: A Computational Perspective, Springer, NY, 2001; see p. 157 (p. 168 in the second printing).
LINKS
EXAMPLE
Comment from Don Reble, May 27 2014: The sequence begins:
2 9
3 2047
5 1373653
6 134670080641
7 25326001
10 307768373641
11 3215031751
12 1502401849747176241
13 2152302898747
14 1478868544880821
15 3034679039109989281
17 3474749660383
18 ?
19 4498414682539051
20 ?
21 ?
22 16043083915816662841
23 341550071728321
CROSSREFS
Cf. A089105.
Sequence in context: A039917 A162140 A006945 * A173281 A004820 A320982
KEYWORD
nonn,hard,more
AUTHOR
N. J. A. Sloane, Jan 18 2004
EXTENSIONS
a(8)-a(13) from Charles R Greathouse IV, Aug 14 2010
Corrected by Don Reble, May 27 2014
STATUS
approved

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Last modified March 29 05:16 EDT 2024. Contains 371264 sequences. (Running on oeis4.)