Try gun shops, gun shows, want ads, on line auctions.
5 & 23
23 * 16 = 368
It is a prime number, so there is only the one pair: 1, 23
IIRC it is the Glock Model 23.
The only factor pair of 23 is 1 and 23
100-400 or so
Any pair of prime numbers as for example 19 and 23
Human cells have 23 pairs of chromosomes. One pair of sex chromosomes, and 22 pairs of autosomes.See en.wikipedia.org/wiki/Chromosome
25 USD
A new one retails for about 500 dollars.
XY in pair 23
10-30 USD or so