481 = 12 + 3 × 45 + 6 × 7 × 8 + 9
481 = 9 + 8 + 7 × 65 + 4 + 3 + 2 × 1
481 = 0^8 − 1^9 − 2^6 − 3^7 + 4^5 + 5^1 + 6^4 + 7^3 + 8^2 + 9^0
481 = 2n(n+1)+1 (n=15), Centered square number
481 = n(3n-2), Octagonal numbers
Brilliant number: product of two primes whose prime factors have the same number of decimal digits.
Number with digitsum 13
Semiprime (Product of 2 Primes)
Factors: 1, 13, 37, 481
Representations, Binary to Hexadecimal:
111100001_2
122211_3
13201_4
3411_5
2121_6
1255_7
741_8
584_9
3a8_11
341_12
2b0_13
265_14
221_15
1e1_16
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Undergraduate Texts in Mathematics
Graduate Studies in Mathematics

