The most commonly identified Shiga toxin-producing Escherichia coli in North America is E. coli O157.
The smallest prime of the form 2p + p3, where p is prime. [Brown]
Two to the power 157 is the smallest "apocalyptic number," i.e., a number of the form 2n that contains '666'. [Pickover]
157 is the smallest three-digit prime that produces five other primes by changing only its first digit: 257, 457, 557, 757, and 857. [Opao]
The smallest prime of form n*((n+1)^(n+2))-(n+3). [Vago]
Bus number 157 is hijacked in the cop thriller Dirty Harry. [May]
The smallest balanced emirp. [Punches]
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]
The smallest prime Köchel number of Mozart's string quartets (String Quartet No. 4 in C). [Hasler]
The smallest emirp whose sum of the digits is another emirp. [Silva]
The product 13 * 17 * 31 * 37 * ... * 149 * 157 = 2847632021876895870149 of consecutive emirps is pandigital. [Poo Sung]
5 is close to 157. [Wesolowski]
The smallest emirp with an emirp as its prime index. [Gaydos]
The largest rating on the Saffir-Simpson Hurricane Wind Scale occurs at sustanined winds of 157 mph or higher.
The 157 foot tower at Cape May has guided ships along the coast and into Delaware Bay since Darwin wrote "Origin of Species." [Roxanne]
(There are 8 curios for this number that have not yet been approved by an editor.)