# 277

This number is a prime. Emily Dickinson composed 277 poems in 1862. [Szegedy-Maszak] The sum 1/2 + 1/3 + 1/5 + 1/7 + 1/11 + ... + 1/271 + 1/277 just exceeds the first prime number. [Wilson] The sum of the letters of "Holy Bible" if we use the alphaprime code: a = 2, b = 3, c = 5, d = 7, e = 11, .... (The Pentateuch was translated into Greek, circa 277 B.C.) [Zirkle] The Grand Canyon is 277 miles long. [Aldridge] In 1996, Dolly became the first animal ever to be successfully cloned from an adult somatic cell by nuclear transfer and was the only survivor of 277 cloning attempts! (The sheep was cloned from a mammary gland cell and named after the busty country music artist Dolly Parton.) The smaller prime factor of semiprime 9000007, the first composite number of the series 97, 907, 9007, etc. A primary pretender for the base b is the smallest composite number n for which bnb (mod n). The list of these (when b = 0, 1, 2, ...) begins 4, 4, 341, 6, 4, 4, 6, 6, 4, 4, 6, 10, 4, 4, 14, 6, 4, 4, 6, 6, 4, 4, 6, 22, 4, 4, 9, 6, 4, 4, 6, 6, 4, 4, 6, 9, ... Do you see the pattern yet? There are only 132 distinct numbers that appear in this list, but it repeats with a period of length 277#*23#. (Take a moment and calculate how large that period is!) [CGSS1997] 277 = (2+7)2 + (7+7)2. [Poo Sung] The approximate kilojoules required per day for a Peregrine falcon. [Johnson] The Don CeSar Beach Resort Hotel in Florida contains 277 luxurious rooms. The only non-titanic prime formed from a prime number n followed by n 7's, i.e., (n=2). [Loungrides] The only 3-digit prime that can be represented as sum of a prime number of first n consecutive composite numbers, (n=17), i.e., 4+6+…+26+27. [Loungrides] The smallest of three non-titanic primes that can be represented as the product of a repdigit number consisting of 5's and all its truncations plus 2, i.e., 55*5+2 = 277. [Loungrides]

(There are 9 curios for this number that have not yet been approved by an editor.)