The Numberphile posted a video for the number 400. There were already nBABs for 400 and 400-1, so this nBAB for the number

400+1was created.MathBabbler Number Analyst (MBNA) output: ========================================= 401 is a natural, whole, integer 401 is odd 401 proper divisors are: 1, 401 is deficient (sum of divisors is 1) 401 is unhappy 401 is a Squarefree Number 401 is not a Harshad number 401 is prime ...Cousin prime with 397 ...Truman Gerald prime with 431 ...Pythagorean ...Super ...Eisenstein 401 is the sum of 9 consecutive primes 401 = 29 + 31 + 37 + 41 + 43 + 47 + 53 + 59 + 61 401 in octal is 0621 401 in hexadecimal is 0x191 401 in binary is 110010001 (is evil) 401 nearest square numbers: -1...40 (400...441 [21]) sqrt(401) = 20.025 ln(401) = 5.99396 log(401) = 2.60314 401 reciprocal is .00249376558603491271820448877805 401! is 2.56778e+871 401 is 127.642 Pi years 401 is 20 score and 1 year 401 written as a Roman numeral is CDI 401 = 201^2 - 200^2 and 201 + 200 = 401

`= 2.72797, which when down to the nearest hundredth equals`

log_{9}(401)erounded up to the nearest hundredth.

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

**Created:** 15 November 2012

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