The Bitcoin system is a dynamic one, within which the computational effort for creating new blocks is subject to fluctuations. The respective current level of difficulty in Bitcoin mining is referred to as Bitcoin Mining Difficulty and is indicated in the form of the so-called hash rate.
In addition to the number of active miners, the fluctuation of the BTC exchange rate also has an influence on the level of difficulty. A hash rate of 10 TH/s means that 10 trillion calculations per second can be performed. The Bitcoin mining difficulty is an important factor for the profitability of Bitcoin mining.