1105 as Sum of Two Squares
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Theorem
$1105$ can be expressed as the sum of two squares in more ways than any smaller integer:
\(\ds 1105\) | \(=\) | \(\, \ds 1089 + 16 \, \) | \(\, \ds = \, \) | \(\ds 33^2 + 4^2\) | ||||||||||
\(\ds \) | \(=\) | \(\, \ds 1024 + 81 \, \) | \(\, \ds = \, \) | \(\ds 32^2 + 9^2\) | ||||||||||
\(\ds \) | \(=\) | \(\, \ds 961 + 144 \, \) | \(\, \ds = \, \) | \(\ds 31^2 + 12^2\) | ||||||||||
\(\ds \) | \(=\) | \(\, \ds 625 + 529 \, \) | \(\, \ds = \, \) | \(\ds 24^2 + 23^2\) |
Proof
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $1105$
- 1994: Richard K. Guy: Unsolved Problems in Number Theory (2nd ed.)
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $1105$