93 = 1 + 2 + 3 × 4 × 5 + 6 + 7 + 8 + 9
93 = 9 + 8 + 7 + 6 + 5 × 4 × 3 + 2 + 1
93 = 0^8 − 1^0 + 2^7 − 3^9 + 4^5 + 5^6 + 6^1 + 7^4 + 8^3 + 9^2
93 = 2^2 + 5^2 + 8^2
93 = ((1 + 1)(11−1) − 1)/11
= 2 × (2 × 22 + 2) + 2/2
= 3 + 3 × (33 + 3)
= ((4 + 4)4 − 4)/44
= 5 × 5 × 5 − ((5 + 5)/5)5
= 666/6 − 6 − 6 − 6
= (777 − 77)/7 − 7
= 8888/88 − 8
= 999/9 − 9 − 9
Number k such that (k! + 3)/3 is prime
Number k such that (16*10^k - 31)/3 is prime.
Cake number, maximal number of pieces resulting from 8 planar cuts through a cube (or cake)
Number of distinct products i*j*k for 1 <= i <= j < k <= n, n = 10
Semiprime (Product of 2 Primes)
Factors: 1, 3, 31, 93
Ninety-three
Representations, Binary to Hexadecimal:
1011101_2
10110_3
1131_4
333_5
233_6
162_7
135_8
113_9
85_11
79_12
72_13
69_14
63_15
5d_16
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Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
