[Dylan16807]

Except the perfect squares don't reduce by half, so it's not quite 50% but it's very close.

[thesz]

Some of them, with notable exception of perfect squares of primes, can be expressed by products of different combinations of factors.

E.g., 6^2 = (223)3 = 2(233).

One of ~22 (ln(2^32)) perfect squares will be a square of perfect prime. Most won't.

[mkl]

Decoding this so it's readable: 6^2 = (2*2*3)*3 = 2*(2*3*3).

(You can escape * with \: \*)

[sdenton4]

Ha, fair!