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Date: 30-6-2020
1361
Date: 21-11-2020
650
Date: 10-5-2020
735
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A bitwin chain of length one consists of two pairs of twin primes with the property that they are related by being of the form:
(1) |
The first few values of generating bitwin chains are 6, 30, 660, 810, 2130, 2550, 3330, ... (OEIS A066388).
In general a chain of length consists of pairs of twin primes,
(2) |
Bitwin chains can also be viewed as consisting of two related Cunningham chains of the first and second kinds,
(3) |
P. Jobling (1999) found the largest known chain of length six,
(4) |
where to 6.
REFERENCES:
Jobling, P. "A BiTwin Chain of Length 6 Discovered." 4 Oct 1999. https://listserv.nodak.edu/scripts/wa.exe?A2=ind9910&L=NMBRTHRY&P=151.
Lifchitz, H. "New Chains of Prime Numbers." https://ourworld.compuserve.com/homepages/hlifchitz/Henri/us/NouvChPus.htm.
Sloane, N. J. A. Sequence A066388 in "The On-Line Encyclopedia of Integer Sequences."
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