2815 = 1 × 2 × 3 × 456 + 7 + 8 × 9
2815 = 9 + 8 + (7 + 6) × 5 × 43 + 2 + 1
2815 = 0^8 + 1^9 − 2^7 − 3^6 + 4^4 + 5^5 + 6^3 + 7^0 + 8^2 + 9^1
Number of atoms in a decahedron with 15 shells
Björner-Welker sequence: 2^n*(n^2 + n + 2) - 1. n = 6
2815 cannot be written as a sum of 3 squares. (Integers that are not a sum of three squares)
Semiprime (Product of 2 Primes)
Factors: 1, 5, 563, 2815
Two thousand, eight hundred fifteen
Representations, Binary to Hexadecimal:
101011111111_2
10212021_3
223333_4
42230_5
21011_6
11131_7
5377_8
3767_9
212a_11
1767_12
1387_13
1051_14
c7a_15
aff_16
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Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
