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11 votes
5 answers
2k views

Nice no-computers way to find limerick primes?

A limerick number is a 5-digit number whose digits are in the form of a limerick rhyme scheme: $aabba$. How many limerick primes (limerick numbers which are also prime) are there? The answer is ...
Rand al'Thor's user avatar
12 votes
4 answers
727 views

A Chwistmas Widdle With a Twist

Chwistmas is the same with or without me, though I do wish you all Mewwy Chwistmas... I wish to be wid of my condition I am named and famed with humiliation A small happy square wheel! That's my goal ...
TheSimpliFire's user avatar
1 vote
2 answers
202 views

Simple Maths Riddle 4

I cheer, I shout, I scream My growth is too extreme I'm way too vast Rates too fast Continuity can only be my dream. What am I?
TheSimpliFire's user avatar
7 votes
1 answer
260 views

Simple Maths Riddle 3

My counterpart has committed multiple crimes; Square us and add: the result is not prime. You use me for a reason; I'm not liked by Cartesians; My converse is a measurement of time. What am I?
TheSimpliFire's user avatar