Showing posts with label Prime Numbers. Show all posts
Showing posts with label Prime Numbers. Show all posts

Monday, April 22, 2024

Can Prime Numbers Be Predicted?

We've all been told that it is impossible to predict the next prime number based on patterns because there is no way to do so but a research team out of Hong Kong and North Carolina have come up with a method that will allow them to do so. These researchers claim prime numbers, those mysterious figures that have puzzled mathematicians for centuries, may actually be predictable. This research challenges long-held beliefs about the nature of prime numbers and opens up new possibilities for understanding their distribution and properties.

The research team decided to explore prime numbers to see if they could find patterns that would lead to being able to predict the next prime number. The researchers developed a series of mathematical models and algorithms designed to predict prime numbers based on the patterns they found. These models incorporate a range of factors, including the distribution of prime number clusters and the relationships between different prime numbers.

Their research lead to a periodic table of primes or PTP which can help people find future primes, factoring integers, visualizing integers and their factors, locating twin primes, predicting the total number of primes and twin primes and estimating the largest prime gap within an interval.

One of the key insights from the study is the concept of "prime number clusters," groups of prime numbers that exhibit certain patterns and relationships. By analyzing these clusters, the researchers were able to identify trends and regularities that suggest prime numbers may follow predictable patterns.

The implications of this research are far-reaching. If prime numbers can indeed be predicted, it could revolutionize fields such as cryptography, where prime numbers are used extensively in encryption algorithms. It could also lead to new insights into the fundamental nature of mathematics and the universe itself.

However, the research has not been without its critics. Some mathematicians argue that the patterns observed in prime number clusters may be the result of random chance or selective data analysis. Others caution that while the research is intriguing, more evidence is needed to support the claim that prime numbers can be predicted reliably.

Despite the skepticism, these researchers are optimistic about the potential of their research. They plan to continue refining their models and algorithms in the hopes of developing a more robust method for predicting prime numbers. Whether or not their efforts will ultimately lead to a reliable method for predicting primes remains to be seen, but one thing is clear: the quest to understand prime numbers is far from over.

Will this paper turn out to be one of those that should have been never been published since it is flawed or will it be correct? I don't know. I do know that the paper is still in the preprint stage and has yet to be peer reviewed so there may be a flaw. in their logic. The reviews I've seen in regard to this paper have not been favorable so only time will tell. Let me know what you think, I'd love to hear.

Wednesday, November 1, 2023

New Information On Prime Numbers.

 My apologies.  I was traveling with one computer and it died while out of the country so I didn't get anything done for Monday.  Now on to today's topic.  I remember having a math professor who did two things.  One was when he wrote his tests, he did it in a bar and wrote the problems on a napkin.  The second thing he continually worked on was finding the largest prime number he could.  I think he retired before he did that.

Now there is a new generation of mathematicians who are working on figuring out the distribution of prime numbers and understanding that distribution. Remember that Eratosthenes came up with the first real method of finding prime numbers between one and 100 known as Eratosthenes's sieve.  There are sieves to find all sorts of primes such as twin primes, etc.

Although we have the sieves, people do not understand the distribution of primes.  Since it is much harder to find primes in a sieve that contains much larger numbers, mathematicians have to estimate the number of primes they think are in the range. In addition, it is often harder to make predictions when looking at other sieves such as the ones for twin primes due to the size of the remainders.  

As you move to larger numbers, it has been found that the remainders fall into a statistically predictable pattern and eventually even out. This means say you take the remainders of 1 and 2 when divided by 3 and place them in one of two buckets. eventually, the two buckets will have the same number of primes.  Mathematicians need to know when the buckets even out and how soon that happens in order to know more about primes.

There were spurts in investigation in the 60's and 80's but nothing more happened until recently. A mathematician investigated the question about buckets evening out and how soon that happens, and calculated that the level of distribution was 0.6 for commonly used sieves. 

His grad students extended it to 0.617.  To do this, they used a technique of inclusion/exclusion which is similar to what students do when they work with the sieve of Eratosthenes.  They exclude 2 and all it's multiples which eliminates about half the numbers or 50%.  Then they exclude 3 and all its multiples which throws out another 1/3rd of the numbers. Ok, this means that due to the way things are counted, many numbers are double counted such as 6 and its multiples because 2 and 3 are factors of 6.  So you add the 1/2 + 1/3 and then subtract 1/6 to account for the twice counted numbers.  This way you do not have an over estimation.

So then you eliminate all numbers for 5 and its multiples but you have to subtract 1/10 and 1/15 to account for any numbers double counted due to 2 and 3.  Thus the process continues with the denominators getting bigger and bigger.  This creates and upper and lower boundary rather than an exact answer. 

This lead to someone to propose the idea that the buckets even out based on the generalized Riemann Hypothesis. This means we are looking for all the primes up to N and the remainders are equally divided up into the number of buckets equal to the square root of N.  So this opens the way for more possibilities in determining the number of primes but it will be a while.  

Let me know what you think, I'd love to hear.  Have a great day.





Tuesday, August 9, 2016

Prime Numbers

Thirteen, 13, Number, SymbolIf you asked your students to describe what makes a prime number prime, most of them will either shrug or tell you its a number whose factors are one and itself.  If you ask them to draw it, how would they react?  Mine simply would shut down because they have no idea how to do that.

I read a cool book called "The Joy of X" by Stephen Strogatz in which he presents prime numbers in a way I like.  Think of a prime number as a number than can be expressed as a square or rectangle no smaller than 2 by 2 with no left overs.

By this definition, it is easy to  draw prime and composite numbers and it makes it easy for students to see why one is easily factored while the other cannot.

If you look at this first picture you will notice that it is not until you get to four that you have a 2 by 2 shape - a square.  This means that 2 and 3 are prime numbers because they do not form the right shape.


Now look at the following illustrations for 5, 6, and 7.
 
The number 5 when drawn does not produce a square or a rectangle.  It produces a 2 by 2 square with one left over. On the other hand, the number 6 can be drawn as a perfect 2 by 3 rectangle while 7 is the 2 by 3 rectangle with one left over.

Notice that the drawings of composite numbers also illustrate at least one set of factors.  The factors of 4 are 2 because 2 x 2 is 4 or 4, 1 because 4 x 1 is 4.  Where as the 5 shows no nice factoring and that makes it easy to tell it is a prime.  For larger numbers, this is where the rules of divisibility come in or factoring trees.

I really like the way Stephen explained it because it gave me a way to help my students "see" a prime number as more than a definition.