Only assembly languages are generally considered low-level programming languages, so one could argue that there is only one low-level language.
However, there are as many assembly languages as there are processor models or families, as each processor family implements its own set of machine code instructions. Different manufacturers not only invent different mnemonics for similar machine code operations to suit conventions and hardware architecture (e.g. MOVE vs LOAD/SAVE), but also support different notations.
Therefore, conceptually, the assembly language is the only low level programming language. However, the standpoint of view of learning the language, or from that of tools to support the language, there are numerous assembly languages, thus numerous low-level languages.
Actually, it is the other way around: The machine language (sometimes known as machine/assembly code) is converted into binary at runtime by the Assembler.
An assembler or a compiler.
1010111
87 = 1010111
Ascii table 78 + 69 + 84 + 87 + 79 + 82 + 75 1001110 1000101 1010100 1010111 1001111 1010010 1001011
There is no seven-digit number that has a sum of 5. The smallest seven-digit number is 1,000,000, which already has a sum greater than 5.
If we are using base 8 then 127 = (7 * 80) + (2 * 81) + (1 * 82) = 7 + 16 + 64 = 87 [i.e. (7 * 100) + (8 * 101)] in the decimal (base 10) system. In binary (base 2) we would write this as:1010111.
89899