New posts in Decimal Expansion

Numbers such that they equal the product of their own digits

How are the known digits of $\pi$ guaranteed?

Elementary number theory problem about finding a square number with digits with certain properties

Multiples of $999$ have digit sum $\geq 27$

Why is there a pattern to the last digits of square numbers?

A number with an interesting property. $abcd=a^b c^d$

Riddle: A special $6$-digit number

Mysterious $10$-digit numbers, how many of such exist?

Recurring decimal expansion of $\frac17$

Palindromes in multiple bases