Here's a challenge: memorize all the prime numbers up to 10,000.
Take every prime number image and then set it on fire. 7043 for me is an axe chopping up a suit of armor. I could just set that compound image on fire. Then when asked if a number is prime, I could just check whether it had been set on fire. Repetition would cement the image modifiers...
I like Simon L's analogy that he used for his memory system, that could also apply to this memory challange:
If anyone attempts this, please leave a comment below!
I've marked the level of this challenge as "intermediate", because it requires a working mnemonic system for numbers.
Below is a list of users who are participating in this memory challenge.