808 = 1 + 2 × 3 × 4 × 5 + 678 + 9
808 = 9 × 87 + 6 + 5 + 4 × 3 + 2 × 1
808 = 0^4 + 1^9 − 2^7 − 3^8 + 4^6 + 5^5 + 6^3 + 7^2 + 8^0 + 9^1
808 = 18^2 + 22^2
808 divides 91^4 - 1.
Strobogrammatic number: the same upside down.
Number k such that k^8 + 1 is prime
Factors: 1, 2, 4, 8, 101, 202, 404, 808
Representations, Binary to Hexadecimal:
1100101000_2
1002221_3
30220_4
11213_5
3424_6
2233_7
1450_8
1087_9
675_11
574_12
4a2_13
41a_14
38d_15
328_16
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Undergraduate Texts in Mathematics
Graduate Studies in Mathematics

