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Water boils at approximately 373 Kelvin. [Croll] Describing 373 and repeating the process with each new term produces three more primes, i.e., one 3, one 7, one 3, generates 131713, etc. [Honaker] 373 = 3^{2} + 5^{2} + 7^{2} + 11^{2} + 13^{2}, i.e., the sum of the squares of five consecutive primes. [De Geest] 373 is the largest prime such that each substring is prime. [Bakker] The smaller member of a Gridgeman pair. [Patterson] 373 = 2^1 + 3^1 + 5^2 + 7^3 is the sum of the first four primes raised to the powers of the the first four Fibonacci numbers. [Post] The only threedigit prime with digits a, b, c, such that a, b, c, ab, and bc are all prime, i.e., 3, 7, 3, 37, and 73 are all prime. [Seidov] The smaller prime in the smallest Gridgeman pair that remains so when 0s are inserted between digits. [Punches] The smallest "primemirp" having only prime digits. [Beedassy] The sum of four consecutive semiprimes (91 + 93 + 94 + 95). [Silva] The smallest balanced palindromic prime. [Silva] The smallest multidigit palindromic prime of distinct prime factors of elements of Lucas sequence v(P=3,Q=5) of the second kind. [Post] The smallest 3digit prime that is an absolute, primedigit, left and righttruncatable (ambitruncatable?) prime. [Green] The largest strange number. The first palindromic prime formed from the enddigits of consecutive primes (43, 47, 53). [Silva] Hall of Fame pitchers Grover Cleveland "Old Pete" Alexander and Christy Mathewson each won 373 games in their professional baseball careers. One hundred grams of brown sugar contains 373 calories. A gear ratio of "threeseventythree" indicates 3.73 drive axle turns for every engine revolution. [Woodby]
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