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A056784
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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.
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1
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OFFSET
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1,2
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LINKS
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Table of n, a(n) for n=1..10.
Thomas R. Nicely, First occurrence of prime gaps
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EXAMPLE
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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.
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CROSSREFS
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Cf. A008950, A008995, A008996, A114100, A002386.
Sequence in context: A077192 A128304 A247728 * A166769 A187667 A092956
Adjacent sequences: A056781 A056782 A056783 * A056785 A056786 A056787
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KEYWORD
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nonn
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AUTHOR
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Frank James Michael Richards, Jun 19 2001
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EXTENSIONS
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Corrected by R. J. Mathar, Sep 29 2006
Three more terms from Donovan Johnson, Jan 28 2008
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STATUS
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approved
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