Thâbit ibn Kurrah Number
المؤلف:
Sloane, N. J. A
المصدر:
Sequence and A055010 in "The On-Line Encyclopedia of Integer Sequences."
الجزء والصفحة:
...
15-12-2020
1634
Thâbit ibn Kurrah Number
A Thâbit ibn Kurrah number, sometimes called a 321-number, is a number of the form 
. The first few for 
, 1, ... are 2, 5, 11, 23, 47, 95, 191, 383, 767, ... (OEIS A055010).
Note that there exist infinitely many odd integers 
such that 
is composite for every 
, and numbers 
with this property are called Riesel numbers.
REFERENCES:
Riesel, H. "Lucasian Criteria for the Primality of 
." Math. Comput. 23, 869-875, 1969.
Sloane, N. J. A. Sequence and A055010 in "The On-Line Encyclopedia of Integer Sequences."
الاكثر قراءة في نظرية الاعداد
اخر الاخبار
اخبار العتبة العباسية المقدسة
