Coll.20th-xxx |
Puzzle's name |
Author(s)/Solvers |
Published Date |
001 |
A
Puzzle-sequence |
G. L. Honaker, Jr. & F. Morales
/
Emmanuel Vantieghem,
Jan van Delden & Giovanni Resta. |
26/5/2018 |
002 |
Minimal set
of primes such that...
|
Claudio Meller /
Giovanni Resta, Simon Cavegn and Michael Hürter |
2/6/2018 |
003 |
Primeful
Heterosquares |
Dmitry Kamenetsky /Claudio Meller,
Michael Hürter, Emmanuel Vantieghem and Dmitry Kamenetski. |
9/6/2018 |
004 |
Puzzles 104
& 385, revisited.
|
Seiji Tomita / Emmanuel
Vantieghem |
16/6/2018 |
005 |
Questions about the function sigma(x)=n. |
Fred Schneider /
Emmanuel Vantieghem, Giovanni Resta. |
23/6/2018 |
006 |
Prime
squaring the Prime square. |
Vic Bold / Fred
Schneider, Giovanni Resta, Jan van Delden and Emmanuel
Vantieghem. |
29/6/2018 |
007 |
Symmetrical (Dihedral) prime tiling of
the plane. |
Jan van Delden /
Emmanuel Vantieghem. |
7/7/2018 |
008 |
Primes of the migrant digit |
Jaime Ayala / Jan van
Delden |
14/7/18 |
009 |
Find
the next term of this sequence |
G. L. Honaker, Jr.
/ Dmitry Kamenetsky and Antoine
Verroken. |
21/7/18 |
010 |
Find the core of a magic cube |
Natalia Makarova
/ Unsolved |
28/7/18 |
011 |
One more as 43*47=2021 |
Giovanni Resta
/ Ken Wilke |
4/8/18 |
012 |
Magic Square 20x20 |
Carlos Rivera
/ Tognon Stefano |
11/8/18 |
013 |
The
set {a+m,a+2m,...} contains infinitely... |
Emmanuel
Vantieghem / John Arioni, Jan van Delden |
18/8/18 |
014 |
Prime
cluster in Euler's trinomial |
Shyam
Sunder Gupta / Unsolved |
15/8/18 |
015 |
Consecutive primes and
Pandigitals |
Rodolfo
Kurchan / Jeff Heleen, Claudio Meller and Emmanuel Vantieghem |
1/9/18 |
016 |
"Good residues" r mod p |
Jaroslaw
Wroblewski / Yilin Zhang |
8/9/18 |
017 |
The square of Prime contains
Prevprime |
Paolo P.
Lava / Unsolved |
15/9/18 |
018 |
Prime repunits as sum of
consecutive primes |
Claudio
Meller / Hans Havermann |
22/9/18 |
019 |
m +/-2^k+/-1 integers. |
Arkadiusz Wesolowski
/ Unsolved |
29/9/18 |
020 |
Another puzzle on
consecutive primes.
|
Zak Seidov / Unsolved |
6/10/18 |