Tau Day death day (6/28/

1901). The first Tau Day of the 20th century.MathBabbler Number Analyst (MBNA) output: ========================================= 1901 is a natural, whole, integer 1901 is odd 1901 proper divisors are: 1, 1901 has 1 proper divisors 1901 is deficient (sum of divisors is 1; ratio: 0.000526039) 1901 is unhappy 1901 is a Squarefree Number 1901 is prime (not composite) ...Sexy prime with 1907 ...Sexy Triplet prime with 1907, 1913 ...Sophie Germain prime with 3803 ...Truman Gerald prime with 1931 ...Truman Gerald prime with 1871 ...Pythagorean ...reversible prime with 1091 ...Eisenstein 1901 is Arithmetic (A003601) 1901 is the sum of 11 consecutive primes 1901 = 149 + 151 + 157 + 163 + 167 + 173 + 179 + 181 + 191 + 193 + 197 1901 in octal is 03555 1901 in hexadecimal is 0x76d 1901 in binary is 11101101101 (is evil) 1901 nearest square numbers: -52...35 (1849...1936 [44]) sqrt(1901) = 43.6005 ln(1901) = 7.55014 log(1901) = 3.27898 1901 reciprocal is .00052603892688058916359810625986 1901! is inf 1901 is 605.107 Pi years 1901 is 95 score and 1 year 1901 written as a Roman numeral is MCMI 1901 is 951^2 - 950^2 and 951 + 950 = 1901 1901 is a multiple of 1 & it contains a 1 (A011531)log11(1901) = 3.14865

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 22 March 2015 (posted 26 March 2015)

This work is licensed under a Creative Commons Attribution 3.0 United States License.