The U.S. patent for the cash register was awarded on 4 November

`.`

1879MathBabbler Number Analyst (MBNA) output: ========================================= 1879 is a natural, whole, integer 1879 is odd 1879 proper divisors are: 1, 1879 is deficient (sum of divisors is 1) 1879 is unhappy 1879 is not a Harshad number 1879 is prime ...Sexy prime with 1873 ...Twin prime with 1877 ...OEIS:002145 (4n+3; n=469) ...prime triplet {1873, 1877, 1879} ...prime quadruplet {1871, 1873, 1877, 1879} 1879 is a lucky number 1879 in octal is 03527 1879 in hexadecimal is 0x757 1879 in binary is 11101010111 (is evil) 1879 nearest square numbers: -30...57 (1849...1936 [44]) sqrt(1879) = 43.3474 ln(1879) = 7.53849 log(1879) = 3.27393 1879 reciprocal is .00053219797764768493879723257051 1879! is inf 1879 is 598.104 Pi years 1879 is 93 score and 19 years 1879 written as a Roman numeral is MDCCCLXXIX

`= 3.1438, which is Pi rounded to the nearest hundredth.`

log_{11}(1879)Albert Einstein was born on Pi Day of

`, which was 12 days prior to when the Ritty's filed their patent.`

1879

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

**Created:** 04 November 2009

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