MathDB
Largest Prime Factor

Source: 1993 AMC 8 Problem 3

June 28, 2011
AMC

Problem Statement

Which of the following numbers has the largest prime factor?
(A) 39(B) 51(C) 77(D) 91(E) 121\text{(A)}\ 39 \qquad \text{(B)}\ 51 \qquad \text{(C)}\ 77 \qquad \text{(D)}\ 91 \qquad \text{(E)}\ 121