1000primes: perhaps a bit of a cheat a list of the first
1000 primes are loaded from a file. See crib sheet.
Kat then says the first 1000 primes and then asks for
for a number to find the primes. It works for numbers
up to 62,710,561 and many beyond.
I.e. 7448 is displayed as 3 primes 2^3, 7^2 and 19
Don’t scoff at the trusted old calculator, when I started
work as a laboratory assistant ‘59/‘60 we had one of these
fantastic machines – a wonder beyond belief!