3081 = 123 + (4 + 5 × 6) × (78 + 9)
3081 = (9 + 8 + 76 × 5 × 4 + 3) × 2 + 1
3081 = 0^7 − 1^8 − 2^9 + 3^6 + 4^5 + 5^2 + 6^4 + 7^1 + 8^3 + 9^0
3081 divides 55^3 - 1.
Number k such that (11*10^k + 19)/3 is prime
Number n such that (n^97+1)/(n+1) is prime.
3081 = binomial(78 + 1, 2) is the 78th triangular number.
Second hexagonal number: a(n) = n*(2*n + 1), n = 39
Number that is the sum of 12 positive 10th powers.
Sphenic number: Product of 3 distinct Primes, (List)
Factors: 1, 3, 13, 39, 79, 237, 1027, 3081
Three thousand, eighty-one
Representations, Binary to Hexadecimal:
110000001001_2
11020010_3
300021_4
44311_5
22133_6
11661_7
6011_8
4203_9
2351_11
1949_12
1530_13
11a1_14
da6_15
c09_16
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Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
