115 = 1 + 23 + 4 × 5 + 6 + 7 × 8 + 9
115 = 9 × 8 + 7 + 6 + 5 + 4 × 3 × 2 + 1
115 = 0^6 − 1^8 + 2^4 − 3^9 + 4^7 + 5^5 + 6^3 + 7^2 + 8^1 + 9^0
115 = 111 + 1 + 1 + 1 + 1
115 = 2 + 2 + 222/2
115 = 3 + (333 + 3)/3
115 = 4 + 444/4
115 = 55 + 55 + 5
115 = 6 × (6 + 6 + 6) + 6 + 6/6
115 = (777 + 77)/7 − 7
115 = 888/8 + 8 × 8/(8 + 8)
115 = 99 + 9 + 9 − (9 + 9)/9
Number k such that (7*10^k + 71)/3 is prime.
Number k such that the Woodall number kx2^k - 1 is prime
Semiprime (Product of 2 Primes)
Factors: 1, 5, 23, 115
Representations, Binary to Hexadecimal:
1110011_2
11021_3
1303_4
430_5
311_6
223_7
163_8
137_9
a5_11
97_12
8b_13
83_14
7a_15
73_16
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Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
