A new puzzle every Saturday. Solutions one week later.

>>>>Basic Stats<<<<
Jun-12-2026
1464 weeks, 1495 pages & 10248 days
28 years 0 Months 21 days
Since May 23 1998

Puzzle of the week

Curios by CR in Prime Curios!
(updated on April 30, 2021)

Latest ten news

No.

Date Puzzle about

Solvers

10 JUn-11-26 Puzzle 1270


Puzzle 645

Puzzle 50,

Puzzle 899
Rahid Zaman, Gennady Gusev, J. M. Rebert, Paul Cleary

Steffen Jakob

Arina Bator

Arina Bator
9 Jun-5-26 Puzzle 1269

Problem 93
Emmanuel Vantieghem

Oscarf Volpatti
8 May-29-26 Problem 93


Problem 92
Michael Branicky, Paul Cleary, Oscar Volpatti

Emilia Gurisatti
7 May-22-26 Puzzle 1268

Puzzle 1264
Emmanuel Vantieghem

Simon Cavegn got a new record of twin & emirps primes!
6 May-5-26 Puzzle 1267


Puzzle 1266

Puzzle 124

Puzzle 55
Emmanuel Vanieghem, Carlos Rivera


Ashaz Jameel

Arina Bator

Ashaz Jameel
5 May-8-26 Puzzle 1266 Raid Zaman, Jeff Heleen, Michael Branicky, Paul Cleary, Emmanuel Vantieghem,  Simon Cavegn
4 May-1-26 Conjecture 111


Puzzle 170

Puzzle 1143
Emmanuel Vantieghem, Gennady Gsev, Simon Cavegn

Ashaz Jameel

Ashaz Jameel
3 Apr-24-26 Puzzle 20


Problem 92

Puzzle 14


Personal Page
Serge Batalov (a BIG! record for Emirps)

Arkadiusz Wesolowski

Patick De Geest (He found the fifth palprime known of the form {n^2+(n+1)^2})
Carlos Rivera, updated his personal page.
2 Apr-17-26 Puzzle 1265




Puzzle 1143
J. M. Rbert, Jeff Heleen, Emmanuel Vantiegehm, Gennady Gusev, Paul Cleary, Simon Cavegn, Oscar Volpatti

Ashaz Jameel
1 Apr-10-26 Puzzle 899



Puzzle 1264
Arkadiusz Wesoloski. He got a near-miss to break a supposed limit that hasn't been proved yet.

Simon Cavegn

 


These pages will be updated every Saturday morning -- Last Modified on: Friday, 12-Jun-2026 16:02:19 MST

"Many thanks to Martha Rivera, Miguel H. Rivera and  G. L. Honaker, Jr. for reviewing and correcting the  very first version of these pages, dated on May 23, 1998 "

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