Question

¿Cuál de los siguientes números tiene el mayor factor primo?

Which of the following numbers has the largest prime factor?

$39$

$51$

$77$

$91$

$121$

Factorizando: $39 = 3 \times 13,$ $51 = 3 \times 17,$ $77 = 7 \times 11,$ $91 = 7 \times 13,$ y $121 = 11 \times 11.$

El mayor factor primo entre estos es $17,$ que es un factor de $51.$

Por lo tanto, la respuesta correcta es B.

Factoring: $39 = 3 \times 13,$ $51 = 3 \times 17,$ $77 = 7 \times 11,$ $91 = 7 \times 13,$ and $121 = 11 \times 11.$

The largest prime factor among these is $17,$ which is a factor of $51.$

Thus, the correct answer is B .