Thursday, August 16, 2012

193

193 is a prime number.

191 and 193 form a twin prime pair.

193 can be formed from the sum of the products of the first three twin prime pairs: 193 = 3 * 5 + 5 * 7 + 11 * 13.

193 can be written as the difference between the product and the sum of the first four primes: 193 = 2 * 3 * 5 * 7 - (2 + 3 + 5 + 7).

193 is the smallest prime whose reversal is a Smith number.

193 is the smallest prime whose fifth power (267785184193) contains all the digits from 1 to 9.

193 has a representation as a sum of two squares: 193 = 72 + 122.

193 is the hypotenuse of a primitive Pythagorean triple: 1932 = 952 + 1682.


Source: Prime Curios!

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