It’s my arm, Gail, but I just came up with a random number (I have no memory what the number was I saw at the time — I just remember a sense of familiarity and correctness) and wrote it on my arm.
I’m also familiar with the “dream as a solution” phenomenon. Hate those! Because they solve something that doesn’t need solving (like yours) or they have outstanding solutions to real problems… only I can’t remember the answer when I wake up. And there’s the related dream type, the OMG! OMG! WE MUST SOLVE THIS! anxiety nightmare that doesn’t even need a coherent problem.
Naps. Naps are good. ;-)