A Remark on the Mandl’s Inequality

نویسنده

  • MEHDI HASSANI
چکیده

So, we have (1.2) p1p2 · · · pn < (pn 2 )n (n ≥ 9), where also holds true by computation for 5 ≤ n ≤ 8. In other hand, one can get a trivial lower bound for that product using Euclid’s proof of infinity of primes; Letting En = p1p2 · · · pn−1 for every n ≥ 2, it is clear that pn < En. So, if pn < En < pn+1 then En should has a prime factor among p1, p2, · · · , pn which isn’t possible. Thus En ≥ pn+1 and for every n ≥ 2 we have p1p2 · · · pn > pn+1. In 1957 in [6], Bonse used elementary methods to show that p1p2 · · · pn > p 2 n+1 (n ≥ 4),

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تاریخ انتشار 2006