# TI-BASIC:Number Concatenation

**Routine Summary**

Concatenates two whole numbers together.

**Inputs**

*M* - the first number
*N* - the second number

**Outputs**

*O* - the concatenated number

**Variables Used**

M, N, O

**Calculator Compatibility**

TI-83/84/+/SE
**Author**

DarkerLine*URL:* United TI
**Download**

:N+M10^(1+int(log(N→O

With our two numbers stored in M and N respectively, we add the first number to the second number by raising it to the 10^{th} power, with the exponent being how many digits are in the number. We then store this result to a new variable for later use.

We can figure out how many digits are in a number by using the 1+int(log( trick. This trick works with any positive whole numbers, and if you add Abs( after Log(, it will also work with negative numbers. Unfortunately, it does not work with decimals.