258

258 = 2 × 3 × 43

258 = 127 + 131, Numbers that are the sum of 2 successive primes.

258 = 1 + 2 + 34 × 5 + 6 + 7 + 8 × 9

258 = 9 + 8 + 76 + 54 × 3 + 2 + 1

258 = 0^6 − 1^8 + 2^4 − 3^9 + 4^7 + 5^5 + 6^0 + 7^3 + 8^2 + 9^1

258 divides 85^2 - 1.

258 = (1 + 1)^{((1+1)^(1+1+1))} + 1 + 1

258 = 2^2×(2+2) + 2

258 = 3 + 3 + 3 × (3 × 3³ + 3)

258 = 4⁴ + (4 + 4)/4

258 = (5⁵ + 5)/(5 + 5) − 55

258 = 6 × (6 × 6 + 6) + 6

258 = (7 − 7/7) × (7 × 7 − 7 + 7/7)

258 = (8 + 8) × (8 + 8) + (8 + 8)/8

258 = 9×(9+9)+99−(9+9+9)/9

Sphenic number: products of 3 distinct primes

Number that is the sum of 6 positive 6th powers.

Number n which is the sum of 3 nonzero 4th powers

Number of points on surface of octahedron; also coordination sequence for cubic lattice: a(0) = 1; for n > 0, a(n) = 4n^2 + 2. n=8

Factors: 1, 2, 3, 6, 43, 86, 129, 258

Representations, Binary to Hexadecimal:

100000010_2
100120_3
10002_4
2013_5
1110_6
516_7
402_8
316_9
215_11
196_12
16b_13
146_14
123_15
102_16

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