About the Number 211 (two hundred eleven)

John Deere was born on 7 February 1804. John would have turned 211 years old if he was alive on the day this nBAB about the number 211 was created.

MathBabbler Number Analyst (MBNA) output:
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211 is a natural, whole, integer
211 is odd
211 proper divisors are: 1,
211 has 1 proper divisors
211 is deficient (sum of divisors is 1; ratio: 0.00473934)
211 is unhappy
211 is a Squarefree Number
211 is prime (not composite)
...Truman Gerald prime with 241
...Truman Gerald prime with 181
...OEIS:002145 (4n+3; n=52)
...Super (prime# 47)
...Left-truncatable
211 is a lucky number
211 is Arithmetic (A003601)
211 is the sum of 3 consecutive primes
211 = 67 + 71 + 73
211 in octal is 0323
211 in hexadecimal is 0xd3
211 in binary is 11010011 (is odious)
211 nearest square numbers: -15...14 (196...225 [15])
sqrt(211) = 14.5258
ln(211) = 5.35186
log(211) = 2.32428
211 reciprocal is .00473933649289099526066350710900
211! is 2.23288e+400
211 is 67.1634 Pi years
211 is 10 score and 11 years
211 written as a Roman numeral is CCXI
211 is 106^2 - 105^2 and 106 + 105 = 211
211 is a multiple of 1 & it contains a 1 (A011531)

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 07 February 2015 (posted 08 February 2015)

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