Solution 11863: The factor() Function Algorithm on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.
What is the factor() function algorithm on the TI-89 family, TI-92 family, and the Voyage 200?
The factor() function returns the rational number factored into primes and a residual having prime factors that exceed 65521. The methods include the well-known factorizations of binomials and quadratics, together with methods described by Geddes, Czapor and Labahn, "Algorithms for Computer Algebra", Kluwer Academic Publishers, Boston, 1992.
Laguerre's method is used for approximate polynomial factorization. (Press et. al: "Numerical Recipes" Cambridge University Press, 1986.)