286 = 12 + 3 × 45 + 67 + 8 × 9
286 = 98 + 7 × (6 + 5 × 4) + 3 + 2 + 1
286 = 0^8 + 1^9 + 2^4 + 3^5 − 4^7 + 5^6 + 6^1 + 7^2 + 8^0 + 9^3
286 divides 21^4 - 1.
286 = binomial(11 + 2, 3) is the 11th tetrahedral number.
a(n) = 1^2 + 3^2 + 5^2 + 7^2 + ... + (2*n-1)^2 = n*(4*n^2 - 1)/3. n = 6
Sphenic number: Product of 3 distinct Primes, (List)
Factors: 1, 2, 11, 13, 22, 26, 143, 286
Two hundred eighty-six
Representations, Binary to Hexadecimal:
100011110_2
101121_3
10132_4
2121_5
1154_6
556_7
436_8
347_9
240_11
1ba_12
190_13
166_14
141_15
11e_16
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