A056784 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, 8, 90, 524, 9552, 31398, 2010734, 2300942550, 2614941710600, 352521223451364324
Offset: 1
Keywords
Examples
2300942550 is the first of 319 consecutive composite numbers. 2614941710600 is the first of 651 consecutive composite numbers. 352521223451364324 is the first of 1327 consecutive composite numbers.
Links
- Thomas R. Nicely, First occurrence prime gaps [For local copy see A000101]
Extensions
Corrected by R. J. Mathar, Sep 29 2006
Three more terms from Donovan Johnson, Jan 28 2008