About the Number 515 (five hundred fifteen)

515 was the smallest number without a nBAB on 22 June 2018.

```MathBabbler Number Analyst (MBNA) output:
=========================================
515 is natural, counting, whole, integer
515 is odd (not even)
515 is extremely odd
515 proper divisors are: 1,5,103,
515 has 3 proper divisors
515 is deficient (sum of divisors is 109; ratio: 0.21165)
515 is unhappy
515 is a Squarefree Number
515 is composite (not prime)
515 has the prime factors: 5*103 (sum=108)
515 is semiprime (biprime or 2-almost prime)
515 is a 103-smooth number
515 is Recaman number 288
515 is undulating
515 is palindromic
515 is the sum of 9 consecutive primes
515 = 41 + 43 + 47 + 53 + 59 + 61 + 67 + 71 + 73
515 is a nude number
515 in octal is 01003
515 in binary is 1000000011 (is odious)
515 nearest square numbers: -31...14 (484...529 [23])
sqrt(515) = 22.6936
ln(515) = 6.24417
log(515) = 2.71181
515! is 4.72203e+1174
515 is 163.93 Pi years
515 is 25 score and 15 years
515 written as a Roman numeral is DXV
515 is 258^2 - 257^2 and 258 + 257 = 515
515 is a multiple of 1 & it contains a 1 (A011531)
515 is a multiple of 5 & it contains a 5 (A121025)
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515 reciprocal is 0.00194174757281553398058252427184466
remainders:
1,10,100,485,215,90,385,245,390,295,375,145,420,80,285,275,175,205,505,415,30,300,425,130,270,125,220,140,370,95,435,230,240,340,310,10
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 22 June 2018