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2. Divisibility rule - Wikipedia

   en.wikipedia.org/wiki/Divisibility_rule

   To test the divisibility of a number by a power of 2 or a power of 5 (2 n or 5 n, in which n is a positive integer), one only need to look at the last n digits of that number. To test divisibility by any number expressed as the product of prime factors p 1 n p 2 m p 3 q {\displaystyle p_{1}^{n}p_{2}^{m}p_{3}^{q}} , we can separately test for ...

3. Least common multiple - Wikipedia

   en.wikipedia.org/wiki/Least_common_multiple

   A multiple of a number is the product of that number and an integer. For example, 10 is a multiple of 5 because 5 × 2 = 10, so 10 is divisible by 5 and 2. Because 10 is the smallest positive integer that is divisible by both 5 and 2, it is the least common multiple of 5 and 2.

4. 1001 (number) - Wikipedia

   en.wikipedia.org/wiki/1001_(number)

   Two properties of 1001 are the basis of a divisibility test for 7, 11 and 13. The method is along the same lines as the divisibility rule for 11 using the property 10 ≡ -1 (mod 11). The two properties of 1001 are 1001 = 7 × 11 × 13 in prime factors 10 3 ≡ -1 (mod 1001) The method simultaneously tests for divisibility by any of the factors ...

5. List of number theory topics - Wikipedia

   en.wikipedia.org/wiki/List_of_number_theory_topics

   1 Divisibility. 2 Fractions. 3 Modular arithmetic. 4 Arithmetic functions. ... Lucas–Lehmer test for Mersenne numbers; AKS primality test; Integer factorization

6. Divisor - Wikipedia

   en.wikipedia.org/wiki/Divisor

   For example, there are six divisors of 4; they are 1, 2, 4, −1, −2, and −4, but only the positive ones (1, 2, and 4) would usually be mentioned. 1 and −1 divide (are divisors of) every integer. Every integer (and its negation) is a divisor of itself. Integers divisible by 2 are called even, and integers not divisible by 2 are called odd.

7. Business owners should not forget anti-money laundering rule ...

   www.aol.com/news/business-owners-not-forget-anti...

   Small business owners should not forget about a rule — currently in legal limbo — that would require them to register with an agency called the Financial Crimes Enforcement Network, or FinCEN ...