Theorem: Prop. 9.14: Fundamental Theorem of Arithmetic

(Proposition 14 from Book 9 of Euclid's “Elements”)

If a least number is measured by (some) prime numbers then it will not be measured by any other prime number except (one of) the original measuring (numbers). * For let $A$ be the least number measured by the prime numbers $B$, $C$, $D$. * I say that $A$ will not be measured by any other prime number except (one of) $B$, $C$, $D$.

fig14e

Modern Formulation

see fundamental theorem of arithmetic.

Proofs: 1

Proofs: 1 2


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References

Bibliography

  1. Kramer Jürg, von Pippich, Anna-Maria: "Von den natürlichen Zahlen zu den Quaternionen", Springer-Spektrum, 2013

Adapted from (subject to copyright, with kind permission)

  1. Fitzpatrick, Richard: Euclid's "Elements of Geometry"