When MathBabbler created a nBAB for the number 717 on 22 December 2011, he discovered that 717 when written in base-2 was the palindromic binary number 1011001101.

The MBNA (MathBabbler Number Analyst) encountered a couple of errors while processing the base-10 number

1011001101. Those errors were left in the MBNA output used in this nBAB.MathBabbler Number Analyst (MBNA) output: ========================================= 1011001101 is a natural, whole, integer 1011001101 is odd 1011001101 proper divisors are: 1,3,11,17,33,51,121,173,187,363, 519,561,947,1903,2057,2841,2941, 5709,6171,8823,10417,16099,20933, 31251,32351,48297,62799,97053,114587, 163831,177089,343761,355861,491493, 531267,1067583,1802141,1947979, 2785127,5406423,5843937,8355381, 19823551,30636397,59470653,91909191, 337000367, 1011001101 is deficient (sum of divisors is 568579251) 1011001101 is unhappy 1011001101 is not a Harshad number 1011001101 is not prime 1011001101 has the prime factors: 3*11*11*17*173*947 (sum=1162) 1011001101 sum of prime factors is: 1162 1011001101 is palindromic ***error: input cannot exceed 100000 1011001101 in octal is 07420523415 1011001101 in hexadecimal is 0x3c42a70d 1011001101 in binary is 111100010000101010011100001101 (is evil) 1011001101 nearest square numbers: -15485...48108 (1010985616...1011049209 [31797]) sqrt(1011001101) = 31796.2 ln(1011001101) = 20.7342 log(1011001101) = 9.00475 1011001101 reciprocal is .00000000098911860631099352284483 Runtime error: exponent too large in raise 1011001101! is inf 1.011e+09 is 3.21812e+08 Pi years 1.011e+09 is 50550055 score and 1 year ./roman error: number must be less that 4000 1011001101 = 505500551^2 - 505500550^2 and 505500551 + 505500550 = 1011001101On 26 December 2011, when this was posted,

`was the the largest number having a nBAB.`

1011001101

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

**Created:** 22 December 2011 (posted 26 December 2011)

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