Foretelling The Next Cicada Swarm

Cicadas live underground for most of their lives, and only emerge in the Spring of their last year in order to mate and reproduce. The North American genus of Cicada, known as Magicicada, has an extremely long life cycle of 13 or 17 years. Each brood of cicadas has it’s own emergent years and life cycles.

The state of Kansas only gets 2 broods of Magicicada. The first brood last appeared in 1998, and has a life cycle of 17 years. The second brood last appeared in 2011, and has a life cycle of 13 years. (It is now 2014.) How many years will it take for both broods to emerge together?

Image credit: Instagram user brandycandy, Data: Magicicada.org
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