1915 = 1 × 23 + 45 × 6 × 7 + 8 + 9
1915 = 98 × (7 + 6) + 5 × 4 × 32 + 1
1915 = 0^7 + 1^9 + 2^5 − 3^8 + 4^6 + 5^2 + 6^3 + 7^0 + 8^4 + 9^1
a(n) = 15*n^2 + 9*n + 1, n = 11
The ring of integers of the field Q(sqrt(-1915)) has class number 6.
Semiprime (Product of 2 Primes)
Factors: 1, 5, 383, 1915
One thousand, nine hundred fifteen
Representations, Binary to Hexadecimal:
11101111011_2
2121221_3
131323_4
30130_5
12511_6
5404_7
3573_8
2557_9
1491_11
1137_12
b44_13
9ab_14
87a_15
77b_16
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