Fact Or

Number Theory Level 1

Which of these numbers has more distinct prime factors?

$\Large 36 \quad 38 \quad 40$

They all have the same number of prime factors 36 38 40

1 solution

Arron Kau Staff
May 13, 2014

$36 = 2^2 \times 3^2 \longrightarrow$ Two prime factors: 2 and 3.

$38 = 2 \times 19 \longrightarrow$ Two prime factors: 2 and 19.

$40 = 2^3 \times 5 \longrightarrow$ Two prime factors: 2 and 5.