T wo mathematicians have cracked a centuries-old puzzle about prime numbers using an approach that no one saw coming. Ben Green of Oxford University and Mehtaab Sawhney of Columbia University ...

Hackers love random numbers, or more accurately ... [Simon] is out there keeping the old ways alive. It doesn’t just look the part either. Unlike most modern projects we see, there isn ...

The international dialling code for Ghana is 233. NOTE: With the addition of new telephone lines since, all old four-digit numbers have been changed to five digits with the addition of figure "2 ...