Recent content by Carl A Bohn

I was reading an old thread about multiplying successive prime numbers adding 1 to obtain another prime number. I have worked with prime numbers for several years now and have developed what I best call a bi-linear advancement. It is an open-ended sieve of Eratosthenes. After many, many hours...

Perhaps a good direction to take your study is into palandromic numbers such as 11,22,33... then 111, 121, 131, ... then 1221, 1331, 1441 and so on. I did wrtie a small fortran routine years ago. but may work better under the control of string manipulation than arithetic.

I have been working on and off for 15 years developing an algorithm to locate prime numbers, using a multiplication approach rather than the traditional division method. To do that I had to identify a basic pattern into which all prime numbers fit. (Yes, there is one.) Once I exhausted all the...