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Divide 463 (a prime) by 595 (a palindrome) to obtain an excellent approximation to the common logarithm of 6. The smallest multidigit prime such that both the sum of digits and product of digits of its square remain square. [Russo] 463 meters is exactly onefourth of an international nautical mile. [Honaker] The entry to the Duomo in Florence, from the Porta della Mandorla on the north side of the Cattedrale di S. Maria del Fiore, contains exactly 463 steps. 463 on a cell phone is the numbers pressed to spell God. [Gregor] The first prime whose digits form a scalene triangle with the smallest prime perimeter. [Beedassy] The first in the smallest set of 7 consecutive primes (463, 467, 479, 487, 491, 499, 503) that are congruent to 3 (mod 4). [Post] There is a 463 double play in baseball. [Homewood] A 463tuple would be an "interesting constellation."
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