Problems & Puzzles:
Collection 20th
Coll.20th011.
One
more as 43*47=2021
On April 6, 2018,
Giovanni Resta wrote:
One may notice that the product of the two consecutive
primes 43 and 47 is equal to the
concatenation of 2 consecutive integers:
43 * 47 = 2021
Q1
Find another pair of consecutive primes whose product is the
concatenation of two consecutive
integers in ascending order.
Q2
Similarly, find a pair of consecutive primes whose product is a
concatenation
of two consecutive integers
in
descending order.
