Hint
A very tricky puzzle involving prime numbers.
Answer
101.
These are prime numbers, which, when reversed, are also prime.
??
Puzzle 2
I am a 10-letter word.
My 9, 6, 1, 2 is something a swimmer might do.
My 5, 4, 4, 3 is not that hot really.
My 7, 4, 3, 2 is a long piece of wood.
My 7, 6, 8, 5, 10 is a small part of something.
My 3, 4, 1, 10 is a deep affection.
My 7, 6, 8 is something you can eat.
My whole is an old form of transport.
The clues were: dive, cool, pole, piece, love, pie.
??
Puzzle 3
Using all of the letters A to Z, each once only, complete these common words. There are currently 3 different answers, can you find them all? --ust-ue-no-o-e--and-a-erid-o--uc-ye-i-thea--tou---rie--ry-th-m-n