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Number Theory
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Demonstrations 61  80 of 528
Digit Sum in Different Bases
Trick to Multiply by N1 in Base N
Primitive Pythagorean Triples on a Curvilinear Grid Defined by Euclid's Formula
Spiral of Primes
abc Conjecture
Decoding the Arecibo Message
Prefix Unit Converter
Generating All Coprime Pairs
Relative Primes and GCDs
The Four Numbers Game
What Triangles Are in the Triangle?
What Squares Are in the Square Grid?
Multiplication Tables for the Group of Integers Modulo n
Hasse Diagrams of Integer Divisors
The Game of Boxes
Graphing Continued Fractions of Quadratic Irrationals
Pythagorean Quadruples Projected on a Sphere
Logarithm Seen as the Size of a Number
Numbers as Sets
The 4 Puzzle
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