Puzzle 1214 pairs of primes (p & q)
such that...During a conversation about possible new puzzles
Giorgos Kalogeropoulos and me came up with the
following one, around March 23, 2025:
żAre there pair of primes (p & q) such
that:
a) q is a substring of p^2 and
b) p is a substring of q^2
The first example that Giorgos found was this
one:
(p, q) = (3595601, 8346551)
3595601^2
= 12928346551201
8346551^2 = 6966491
3595601
Later he added the following three more
examples:
p=8259499 and q=8219323731001
p=406348037 and q=1651187271737533
p=599963737 and q= 564857150051
Q. Can you find more examples?