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A Conversation Piece

Stage: 2 Challenge Level: Challenge Level:1

Caroline from Tattingstone and Douglas from Burgoyne Middle School both began by listing the first ten prime numbers:

2,3,5,7,11,13,17,19,23,29.

They then proceeded in the same way:

6469693230/2=3234846615
3234846615/3=1078282205
1078282205/5=215656441
215656441/7=30808063
30808063/11=2800733
2800733/13=215441
215441/17=12673
12673/19=667
667/23=29
29/29=1

And the answer they arrived at was 1!

Clearly worked out - well done.