6681 = (12 + 34 + 5) × (6 × 7 + 89)
6681 = 9 × (8 + 7) + 6543 + 2 + 1
6681 = 0^6 + 1^8 + 2^9 + 3^7 + 4^4 + 5^5 + 6^1 + 7^0 + 8^3 + 9^2
6681 divides 52^13 - 1.
a(n) = (2*n + 1)*(5*n + 6), n = 25
Sphenic number: Product of 3 distinct Primes, (List)
Factors: 1, 3, 17, 51, 131, 393, 2227, 6681
Six thousand, six hundred eighty-one
Representations, Binary to Hexadecimal:
1101000011001_2
100011110_3
1220121_4
203211_5
50533_6
25323_7
15031_8
10143_9
5024_11
3a49_12
306c_13
2613_14
1ea6_15
1a19_16
<--- --->
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
