378 = 1 + 234 + 56 + 78 + 9
378 = 9 + 8 × 7 × 6 + 5 + 4 + 3 + 21
378 = 2 × 3 × 3 × 3 × 7 = 23 + 33 + 73
378 = 0^5 − 1^9 + 2^8 + 3^4 − 4^7 + 5^6 + 6^0 + 7^1 + 8^2 + 9^3
\( \det\begin{pmatrix}
3 & 7 & 8\\
8 & 3 & 7\\
7 & 8 & 3
\end{pmatrix}
= 378 \)
Positive integers n that are equal to the determinant of the circulant matrix formed by the decimal digits of n
Number k such that k^8 + 1 is prime
Number k such that 10^(2*k+1) - 10^k - 1 is prime.
Cake number, maximal number of pieces resulting from 13 planar cuts through a cube (or cake)
Factors: 1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378
Representations, Binary to Hexadecimal:
101111010_2
112000_3
11322_4
3003_5
1430_6
1050_7
572_8
460_9
314_11
276_12
231_13
1d0_14
1a3_15
17a_16
<--- --->
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
