This nBAB was created on St. Patrick's Day 2009 (i.e.

`March 2009).`

17MathBabbler Number Analyst (MBNA) output: ========================================= 17 is a natural, whole, integer 17 is odd 17 proper divisors are: 1, 17 is deficient (sum of divisors is 1) 17 is unhappy 17 is not a Harshad number 17 is prime ...Cousin prime with 13 ...Sexy prime with 23 ...Sexy prime with 11 ...Twin prime with 19 ...Pythagorean ...Super ...Left-truncatable ...prime triplet {11, 13, 17} ...prime triplet {13, 17, 19} ...prime triplet {17, 19, 23} ...prime quadruplet {11, 13, 17, 19} 17 is undulating 17 in octal is 021 17 in hexadecimal is 0x11 17 in binary is 10001 (is evil) 17 nearest square numbers: -1...8 (16...25 [5]) sqrt(17) = 4.12311 ln(17) = 2.83321 log(17) = 1.23045 17 reciprocal is .05882352941176470588235294117647 17! is 3.55687e+14 17 is 5.41127 Pi years 17 is 0 score and 17 years 17 written as a Roman numeral is XVII

`[Wikipedia]`

`is a`

17Fermat numberbecause it is of the form`2^2^n + 1`

.let n=2, 2^2^2 + 1 = 2^4 + 1 = 16 + 1 =17The first few Fermat numbers are...

3, 5, 17, 257, 65537, 4294967297, 18446744073709551617OEIS.org::id:A000215

## Update::2011.06.04

On 2 June 2011, while in Mountain View, California, RoadHacker encountered his first 17 MPH prime numbered speed limit sign. This nBAB for the number

17was created on 17 March 2009 and since then functionality was added to the MBNA. The following is the MBNA output for the number17generated on 4 June 2011 with the new output rendered in bold.MathBabbler Number Analyst (MBNA) output: ========================================= 17 is a natural, whole, integer 17 is odd 17 proper divisors are: 1, 17 is deficient (sum of divisors is 1) 17 is unhappy 17 is not a Harshad number 17 is prime ...Cousin prime with 13 ...Sexy prime with 23 ...Sexy prime with 11 ...Twin prime with 19...Truman Gerald prime with 47...Pythagorean ...Super...reversible prime with 71...Left-truncatable...Eisenstein...prime triplet {11, 13, 17} ...prime triplet {13, 17, 19} ...prime triplet {17, 19, 23} ...prime quadruplet {11, 13, 17, 19} 17 is undulating17 is a Leyland number (2^4+4^2)17 is the sum of 4 consecutive primes ...17 = 2 + 3 + 5 + 717 in octal is 021 17 in hexadecimal is 0x11 17 in binary is 10001 (is evil) 17 nearest square numbers: -1...8 (16...25 [5]) sqrt(17) = 4.12311 ln(17) = 2.83321 log(17) = 1.23045 17 reciprocal is .05882352941176470588235294117647 17! is 3.55687e+14 17 is 5.41127 Pi years 17 is 0 score and 17 years 17 written as a Roman numeral is XVII17 = 9^2 - 8^2 and 9 + 8 = 17

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

**Created:** 17 March 2009

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