Keep going with the other primes (7, 11, 13 etc), removing all the multiples of these as you go. You should end up with a list of 25 prime numbers between 1 and 100. These are shown in the grid below.

Keir Starmer stumbles as he nears 100 days as U.K. prime minister. His dramas may be low on the scale of recent British political scandals, but the shine has worn off remarkably quickly after a ...