The Safe Primes nBAB collection was created on 15 September 2015.

263was the smallest Safe Prime that didn't have a nBAB for it when the Safe Primes collection was created.MathBabbler Number Analyst (MBNA) output: ========================================= 263 is a natural, whole, integer 263 is odd 263 proper divisors are: 1, 263 has 1 proper divisors 263 is deficient (sum of divisors is 1; ratio: 0.00380228) 263 is happy 263 is a Squarefree Number 263 is prime (not composite) ...Safe prime with 131 ...Sexy prime with 269 ...Sexy prime with 257 ...Sexy Triplet prime with 257, 251 ...Truman Gerald prime with 293 ...Truman Gerald prime with 233 ...OEIS:002145 (4n+3; n=65) ...Eisenstein 263 is Arithmetic (A003601) 263 is ThurmNumber 263 is the sum of 5 consecutive primes 263 = 43 + 47 + 53 + 59 + 61 263 in octal is 0407 263 in hexadecimal is 0x107 263 in binary is 100000111 (is evil) 263 nearest square numbers: -7...26 (256...289 [17]) sqrt(263) = 16.2173 ln(263) = 5.57215 log(263) = 2.41996 263 reciprocal is .00380228136882129277566539923954 263! is 6.8884e+523 263 is 83.7155 Pi years 263 is 13 score and 3 years 263 written as a Roman numeral is CCLXIII 263 is 132^2 - 131^2 and 132 + 131 = 263

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

**Created:** 16 September 2015

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