Sunday Times Teaser 2667 – Prime Time

by Peter G Chamberlain

I wrote an A next to one number on a diagram of a clock face and then moved a number of hour positions clockwise and wrote a B.

I continued in this way using the same number of clockwise steps to write all the following letters so that they each had a corresponding number.

I noticed that the two numbers with three letters by them were both prime.

I also noticed that if I wrote the numbers for PRIME in order to form a long number, I obtained a six-digit prime.

What numbers correspond to A and B respectively?