251
This number is a prime.
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The Moon not only changes phases from lunation to lunation
but changes in size as the Moon moves closer to and farther
away from the Earth. The length of 18 fumocies is almost
exactly equal to the length of 251 lunations. [Engel]
Submitted: 2005-11-22 22:01:59; Last Modified: 2009-04-25 22:51:23.
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