1811
This number is a prime.
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The Saros cycle is approximately 18 years, 11 days long. [NASA]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
Just showing those entries submitted by 'NASA': (Click here to show all)
The Saros cycle is approximately 18 years, 11 days long. [NASA]