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A068435 Consecutive prime powers without a prime between them. +0
1
8, 9, 25, 27, 121, 125, 2187, 2197, 32761, 32768 (list; graph; listen)
OFFSET

0,1

COMMENT

Only 5 terms are known to 10^14.

EXAMPLE

8=2^3, 9=2^3, there is no prime between 8 and 9. 25=5^2, 27=3^3, there is no prime between 25 and 27.

CROSSREFS

Adjacent sequences: A068432 A068433 A068434 this_sequence A068436 A068437 A068438

Sequence in context: A077599 A109097 A115645 this_sequence A124438 A124184 A062307

KEYWORD

nonn

AUTHOR

Jon Perry (perry(AT)globalnet.co.uk), Mar 09 2002

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.


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