1707

This number is a composite.

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The first four nonzero digits of the sum of the series (1/64 + 1/729 + 1/15625 + 1/117649 + 1/1771561 + 1/4826809), i.e., the sum of the reciprocals of the sixth powers of the primes.

Submitted: 2004-01-23 13:52:49; Last Modified: 2008-01-30 17:28:00.