Maximal Prime Gaps

January 8, 2016

Although the prime numbers are fascinating in their own right, sometimes it is interesting and instructive to look at the gaps between successive prime numbers. For instance, here is a table that shows how the maximal prime gap grows:

2    1
3    2
7    4
23   6
89   8
113  14
523  18
887  20

At each step the table shows a prime number and the gap to the next prime number; for instance, at prime 7 the gap to the next prime number, 11, is 4. The table only shows those instances where the prime gap increases. Note that the increases are not steady; for instance, a gap of 14 appears before a gap of 10 or 12.

Your task is to write a program that creates the table shown above. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.

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