1485 = 1 × 2 × 345 + 6 + 789
1485 = 987 + 65 + 432 + 1
1485 = 0^5 + 1^6 + 2^8 − 3^9 + 4^7 + 5^0 + 6^1 + 7^3 + 8^4 + 9^2
1485 divides 89^6 - 1.
Numbers k such that both k+2 and k-2 are prime.
Number k such that (16*10^k - 31)/3 is prime.
1485 = binomial(54 + 1, 2) is the 54th triangular number.
a(n) = 3*n*(n + 3)/2. (n = 30)
Factors: 1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495, 1485
One thousand, four hundred eighty-five
Representations, Binary to Hexadecimal:
10111001101_2
2001000_3
113031_4
21420_5
10513_6
4221_7
2715_8
2030_9
1130_11
a39_12
8a3_13
781_14
690_15
5cd_16
<--- --->
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
