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First nonprime in a sequence of consecutive nonprimes which is at least twice as long as any earlier run of consecutive nonprimes in this list.
1

%I #10 Oct 28 2021 12:37:08

%S 1,8,90,524,9552,31398,2010734,2300942550,2614941710600,

%T 352521223451364324

%N First nonprime in a sequence of consecutive nonprimes which is at least twice as long as any earlier run of consecutive nonprimes in this list.

%H Thomas R. Nicely, <a href="https://faculty.lynchburg.edu/~nicely/gaps/gaplist.html">First occurrence prime gaps</a> [For local copy see A000101]

%e 2300942550 is the first of 319 consecutive composite numbers.

%e 2614941710600 is the first of 651 consecutive composite numbers.

%e 352521223451364324 is the first of 1327 consecutive composite numbers.

%Y Cf. A008950, A008995, A008996, A114100, A002386.

%K nonn

%O 1,2

%A _Frank James Michael Richards_, Jun 19 2001

%E Corrected by _R. J. Mathar_, Sep 29 2006

%E Three more terms from _Donovan Johnson_, Jan 28 2008