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On the Product of the Primes

Published online by Cambridge University Press:  20 November 2018

Denis Hanson
Denis Hanson*
Affiliation:
University of Saskatchewan, Regina, Saskatchewan
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In recent years several attempts have been made to obtain estimates for the product of the primes less than or equal to a given integer n. Denote by the above-mentioned product and define as usual

Analysis of binomial and multinomial coefficients has led to results such as A(n)<4n, due to Erdôs and Kalmar (see [2]). A note by Moser [3] gave an inductive proof of A(n)<(3.37)n, and Selfridge (unpublished) proved A(n)<(3.05)n More accurate results are known, in particular those in a paper of Rosser and Schoenfeld [4] in which they prove Θ(n)< 1.01624n; however their methods are considerably deeper and involve the theory of a complex variable as well as heavy computations. Using only elementary methods we will prove the following theorem, which improves the results of [2] and [3] considerably.

Type
Research Article
Information
Canadian Mathematical Bulletin , Volume 15 , Issue 1 , March 1972 , pp. 33 - 37
Copyright
Copyright © Canadian Mathematical Society 1972

References

1. Appel, K. I. and Rosser, J. B., Tables for estimating functions of primes, Comm. Research Div. Technical No. 4, Von Neumann Hall, Princeton, N.J. (Sept. 1961).Google Scholar
2. Hardy, G. H. and Wright, E. M., The theory of numbers, Oxford Univ. Press, London, Ch. XXII, 4th éd., 1959.Google Scholar
3. Moser, L., On the product of the primes not exceeding n , Canad. Math. Bull. (2) 2 (1959), 119-121.Google Scholar
4. Rosser, J. B. and Schoenfeld, L., Approximate formulas for some functions of prime numbers, Illinois J. Math. 6 (1962), 64-94.Google Scholar