Rumpelstiltskin and maths quiz.

Daughter is finding her mixed sixth form is a different culture from her convent boarding school. She is not displeased that some boys have been asking for her phone number, but doesn't want them to have it. So she is devising a quiz for them. Her phone number is a combination of the answers to clues such as:

• a number that the Romans didn't know about
• the third digit is two to the power 3, minus 1
• another number is the 4th prime number

If any lad goes the trouble of working these out, then they are suited to each other!