Recently in the news there is talk of the 17 year cycle cidada. Why 17 years? Seems like a long time. The reason is prime numbers. Watch the video for the explination.
Here are some other news articles and some culture around cicadas
Cicadas take over Staten Island – NY Times
17 Year Cicada Mystery – NY Times
The Japanese love bugs. In the summer time you can buy pet beetles (2) at the local hardware store. Long ago a famous poet named Basho traveled through Japan and worte many haikus about the world around him. One of those is about the cicada. It is carved in a rock at Yamadera. Basho spent some time in this town and temple.
iwa nishimi iru
semi no koe
permeating the rock
the cicada's sound