Persistence of a number assumed. The single-digit final state reached in the process of calculating an integer's additive persistence is its digital root. Put another way, a number's additive persistence counts how many times we must sum its digits to arrive at its digital root. The additive persistence of 2718 is 2: first we find that 2 + 7 + 1 + 8 = 18, and then that 1 + 8 = 9. The multiplicative persistence of 39 is 3, because it takes three steps to reduce 39 to a single digit: 39 → 27 → 14 → 4. Also, 39 is the smallest
Routing number (Canada) is only available in PDF format and cannot be imported into business applications. Routing number (Canada) A routing number is the term for bank codes in Canada. Routing numbers consist of eight numerical digits with a dash between the fifth and sixth digit for paper financial documents encoded with magnetic ink character recognition and nine numerical digits without dashes for electronic funds transfers. Routing numbers are regulated by Payments Canada, formerly known as the Canadian Payments Association, to allow easy identification of the branch location and financial institution associated with an account. A routing number consists of a five digit