Science

Primes, primes everywhere!

Mathematicians get closer to solving one of the greatest problems in number theory.

Mathematicians from the US, Hungary and Turkey just might be one step closer towards the impossible. One of the greatest problems in number theory is determining whether the number of prime tuples, prime numbers which lie very close to each other, is infinite. In short, “are there an infinite number of prime tuples which lie next to each other?”

The authors present a mathematical technique which shows that there are an infinite number of prime tuples within 16 or less from each other. While this does not fully solvethe long-standing problem, the research published in Annals of Mathematics at least offers a “partial solution”.

Prime numbers are divisible only by themselves and 1. For example, 2, 3 and 5 are all prime since they can only be divided by themselves and 1. Whereas 4 is not, since it can bedivided by itself, 1 and 2. This makes it seem that there are less primes than there are positive integers; however, mathematics can tell us that there are as many prime numbers as there are positive integers.

However, as the size of the number increases, the distance between adjacent prime numbers also increases. This means that the chance that any given number is prime decreases as the size of the number increases. The research indicates that even with a decreasing probability of finding two primes close to one-and-other, primes with very close neighbours are still infinitely many. A weird result, since this means that prime tuples are as numerous as the set of positive integers.

DOI: 10.4007/annals.2009.170.819

From Issue 1549

31st May 2013

Discover stories from this section and more in the list of contents

Explore the edition

Read more

Hot desking for Maths PhDs postponed after student backlash against planning

News

Hot desking for Maths PhDs postponed after student backlash against planning

The Math department has postponed its move to introduce hot desking in Huxley offices, which was due 26 October, after student feedback.  Hot desking (unassigned desks organised in an ad hoc, reservation basis) has been a topic of discussion for the Maths PhD students for the past academic year, an

By Cristina Carrillo

News

Imperial amends Turnitin End User Licence Agreement statement

Earlier this month, Turnitin proposed changes to their End User Licence Agreement (EULA) that would have involved the use of student submissions to improve or develop AI tools. These were postponed after the wider Higher Education sector showed concerns regarding the privacy of student data and the potential use of

By Cristina Carrillo
NVIDIA donates $250 million to AI safety research in UK, Imperial amongst benefiters

News

NVIDIA donates $250 million to AI safety research in UK, Imperial amongst benefiters

NVIDIA, leader in chipmaking and the world’s most valuable company, announced 15 October a donation of $250 million in computing power towards research in AI safety.  The donation is in the form of $50 million of computing power for the next five years, accessed through U.K.-based NVIDIA

By Cristina Carrillo