Skip to Main Content

Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.78.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.


New Cullen primes
HTML articles powered by AMS MathViewer

by Wilfrid Keller PDF
Math. Comp. 64 (1995), 1733-1741 Request permission


Numbers of the forms ${C_n} = n \cdot {2^n} + 1$ and ${W_n} = n\cdot {2^n} - 1$ are both called Cullen numbers. New primes ${C_n}$ are presented for $n = 4713,5795,6611,18496$. For ${W_n}$, several new primes are listed, the largest one having $n = 18885$. Furthermore, all efforts made to factorize numbers ${C_n}$ and ${W_n}$ are described, and the result, the complete factorization for all $n \leq 300$, is given in a Supplement.
Similar Articles
Additional Information
  • © Copyright 1995 American Mathematical Society
  • Journal: Math. Comp. 64 (1995), 1733-1741
  • MSC: Primary 11A51; Secondary 11A41, 11Y05
  • DOI:
  • MathSciNet review: 1308456