|
|
A248936
|
|
Decimal expansion of 2^4423 - 1, the 20th Mersenne prime A000668(20).
|
|
19
|
|
|
2, 8, 5, 5, 4, 2, 5, 4, 2, 2, 2, 8, 2, 7, 9, 6, 1, 3, 9, 0, 1, 5, 6, 3, 5, 6, 6, 1, 0, 2, 1, 6, 4, 0, 0, 8, 3, 2, 6, 1, 6, 4, 2, 3, 8, 6, 4, 4, 7, 0, 2, 8, 8, 9, 1, 9, 9, 2, 4, 7, 4, 5, 6, 6, 0, 2, 2, 8, 4, 4, 0, 0, 3, 9, 0, 6, 0, 0, 6, 5, 3, 8, 7, 5, 9, 5, 4, 5, 7, 1, 5, 0, 5, 5, 3, 9, 8, 4, 3, 2, 3, 9, 7, 5, 4
(list;
constant;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1332,1
|
|
COMMENTS
|
The 19th Mersenne prime and this prime were found in 1961 by Alexander Hurwitz, using IBM 7090.
|
|
LINKS
|
Alexander Hurwitz, New Mersenne Primes, Mathematics of Computation, vol. 16, No. 78 (1962), pp. 249-251.
|
|
FORMULA
|
|
|
EXAMPLE
|
28554254222827961390156356610216400832616423864470288919924745660228440...
|
|
MATHEMATICA
|
RealDigits[2^4423 - 1, 10, 100][[1]] (* G. C. Greubel, Oct 03 2017 *)
|
|
PROG
|
(Magma) Reverse(Intseq(2^4423-1));
(PARI) eval(Vec(Str(2^4423-1)))
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|