507 = 1 + 2 × 3 × 4 + 5 + 6 × 78 + 9
507 = (9 × 8 + 7) × 6 + 5 + 4 + 3 + 21
507 = 0^5 + 1^7 + 2^8 + 3^4 − 4^9 + 5^3 + 6^2 + 7^1 + 8^6 + 9^0
Central polygonal number: a(n) = n^2 - n + 1
Factors: 1, 3, 13, 39, 169, 507
Representations, Binary to Hexadecimal:
111111011_2
200210_3
13323_4
4012_5
2203_6
1323_7
773_8
623_9
421_11
363_12
300_13
283_14
23c_15
1fb_16
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Undergraduate Texts in Mathematics
Graduate Studies in Mathematics

