|
|
A265497
|
|
Numbers n such that n*2^127 - 1 is prime.
|
|
1
|
|
|
1, 103, 190, 289, 460, 483, 511, 534, 651, 793, 820, 880, 901, 939, 945, 958, 1045, 1168, 1195, 1198, 1216, 1374, 1408, 1479, 1489, 1500, 1521, 1534, 1539, 1569, 1599, 1623, 1630, 1671, 1678, 1875, 1938, 1939, 1963, 1996, 2028, 2136, 2140, 2166, 2179, 2289
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
The exponent of 2 in the expression, 127, is a Mersenne exponent.
|
|
LINKS
|
|
|
EXAMPLE
|
n = 1 is a term since 2^127 - 1 is prime (the 12th Mersenne prime).
|
|
MATHEMATICA
|
|
|
PROG
|
(MATLAB)
if isprime(n*2^127-1)
disp(n)
end
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|