157

This number is a prime.

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The fourth (and smallest prime) Koechel number of Mozart's string quartets. The fourth largest (i.e., preantepenultimate) such number (KV 499) is again (the largest such) prime. [Hasler]

Submitted: 2008-02-13 19:49:59; Last Modified: 2008-02-14 01:42:02.