Problem-Solving Enrichment and Training

ProbSET 3.0 Palaro Finals -- Grand Investigation

And they're off! Our finalists are starting their inquiry on the problems given by the National Board of Judges.

Good luck to the teams and may the odds be ever in your favor!

2026 is a semiprime—meaning it's a product of two primes. And since that its prime factorization is 2 x 1013, it is also a squarefree semiprime (both prime factors are distinct).

Years 2027 and 2029 are actually prime number years, but after 2026, when do you think is the next semiprime year?