1105 = 1 + (2 + 34) × 5 × 6 + 7 + 8 + 9
1105 = 9 + 8 + 7 + 6 × 5 × 4 × 32 + 1
1105 = 4^2 + 33^2 = 9^2 + 32^2 = 12^2 + 31^2 = 23^2 + 24^2
1105^2 = 47^2 + 1104^2 = 264^2 + 1073^2 = 576^2 + 943^2 = 744^2 + 817^2
1105 divides 18^4 - 1.
Carmichael number: composite numbers k such that a^(k-1) == 1 (mod k) for every a coprime to k.
a(n) is the product of the first n primes congruent to 1 (mod 4).
Moser-de Bruijn sequence: sums of distinct powers of 4
Sphenic number: Product of 3 distinct Primes, (List)
Factors: 1, 5, 13, 17, 65, 85, 221, 1105
One thousand, one hundred five
Representations, Binary to Hexadecimal:
10001010001_2
1111221_3
101101_4
13410_5
5041_6
3136_7
2121_8
1457_9
915_11
781_12
670_13
58d_14
4da_15
451_16
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Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
