261

261 = 3 × 3 × 29

261 = 123 + 45 + 6 + 78 + 9

261 = 98 + 76 + 54 + 32 + 1

261 = 0^5 + 1^9 + 2^7 − 3^8 + 4^6 + 5^3 + 6^1 + 7^4 + 8^2 + 9^0

261 = 6^2 + 15^2

261 divides 28^2 - 1.

Number that is the sum of 6 nonzero 8th powers

Moser-de Bruijn sequence: sums of distinct powers of 4

Factors: 1, 3, 9, 29, 87, 261

Representations, Binary to Hexadecimal:

100000101_2
100200_3
10011_4
2021_5
1113_6
522_7
405_8
320_9
218_11
199_12
171_13
149_14
126_15
105_16

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