13th root 13th root of a 100-digit number. All world records for mentally extracting a 13th root have been for numbers with an integer root. 13th root Extracting the 13th root of a number is a famous category for the mental calculation world records. The challenge consists of being given a large number (possibly over 100 digits) and asked to return the number that, when taken to the 13th power, equals the given number. For example, the 13th root of 8,192 is 2 and the 13th root of 96,889,010,407 is 7. Extracting the 13th root has certain properties. One is that the
Solo 401(k) are not considered active businesses, and therefore are not subject to UBIT. The tax forms that apply to a Solo 401(k) can vary according to the assets and size of the plan. Here is a listing of the most common: Although both the Solo 401(k) and SEP IRA function as a retirement vehicle for self-employed individuals, the Solo 401(k) offers a number of features not found in the SEP. The after-tax contribution strategy is only available if the plan documents specifically allow for after-tax contributions. Solo 401(k) A Solo 401(k), (also known as a Self Employed 401(k) or Individual 401(k)),