Numbers / 271

The Number 271

271 is prime: only 1 and 271 divide it evenly; the next prime after 271 is 277. 271's proper divisors total just 1, 270 short of 271, the deficient case most of 271's neighbors share too. 271 has a digit sum of 10; for 271, the digital root works out to 1. 271 shares no factor with 2-12; 271's own divisors start beyond that range. 271 is 100001111 in binary and 10F in hex; as a Roman numeral it's CCLXXI.