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155 (number) : ウィキペディア英語版 | 155 (number)
155 (one hundred () fifty-five) is the natural number following 154 and preceding 156. It is a composite number and a semiprime. If you add up all the primes from the least through the greatest prime factors of 155, that is, 5 and 31, the result is 155. Only three other small semiprimes (10, 39, and 371) share this attribute. There are 155 primitive permutations of degree 81. ==In the military==
* USS Capable (AM-155) was a United States Navy Admirable minesweeper ship during World War II * USS Cole (DD-155) was a United States Navy Wickes-class destroyer during World War II * USS General A. W. Brewster (AP-155) was a United States Navy General G. O. Squier transport ship during World War II * USS Hopping (DE-155) was a United States Navy Buckley destroyer escort ship during World War II * USS Lycoming (APA-155) was a United States Navy Haskell-class attack transport during World War II * USS Mustang (IX-155) was a United States Navy four-master wooden schooner during World War II
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