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2. List of Mersenne primes and perfect numbers - Wikipedia

   en.wikipedia.org/wiki/List_of_Mersenne_primes...

   Perfect numbers are natural numbers that equal the sum of their positive proper divisors, which are divisors excluding the number itself. So, 6 is a perfect number because the proper divisors of 6 are 1, 2, and 3, and 1 + 2 + 3 = 6. [2] [4]

3. Perfect number - Wikipedia

   en.wikipedia.org/wiki/Perfect_number

   Illustration of the perfect number status of the number 6. In number theory, a perfect number is a positive integer that is equal to the sum of its positive proper divisors, that is, divisors excluding the number itself. For instance, 6 has proper divisors 1, 2 and 3, and 1 + 2 + 3 = 6, so 6 is a perfect number. The next perfect number is 28 ...

4. Multiply perfect number - Wikipedia

   en.wikipedia.org/wiki/Multiply_perfect_number

   In mathematics, a multiply perfect number (also called multiperfect number or pluperfect number) is a generalization of a perfect number. For a given natural number k , a number n is called k -perfect (or k -fold perfect) if the sum of all positive divisors of n (the divisor function , σ ( n )) is equal to kn ; a number is thus perfect if and ...

5. National Council of Educational Research and Training

   en.wikipedia.org/wiki/National_Council_of...

   Dr. Dinesh Prasad Saklani is the director of NCERT since 2022. [2] In 2023, NCERT constituted a 19-member committee, including author and Infosys Foundation chair Sudha Murthy, singer Shankar Mahadevan, and Manjul Bhargava to finalize the curriculum, textbooks and learning material for classes 3 to 12. [4]

6. From frozen waffles to onions: How recent recalls highlight ...

   www.aol.com/news/frozen-waffles-onions-recent...

   From E. coli traced to slivered onions on McDonald's Quarter Pounders to mass recalls of frozen waffles due to listeria risk, foodborne illness seems ever-present in the headlines.

7. Oregon man arrested for cold case murder of car salesman

   www.aol.com/oregon-man-arrested-cold-case...

   An Oregon man was arrested and charged Thursday for the murder of a car dealership owner who disappeared three years ago, police said Monday. Murphy Henry, 54, was also charged with abuse of a ...

8. Almost perfect number - Wikipedia

   en.wikipedia.org/wiki/Almost_perfect_number

   Demonstration, with Cuisenaire rods, that the number 8 is almost perfect, and deficient.. In mathematics, an almost perfect number (sometimes also called slightly defective or least deficient number) is a natural number n such that the sum of all divisors of n (the sum-of-divisors function σ(n)) is equal to 2n − 1, the sum of all proper divisors of n, s(n) = σ(n) − n, then being equal to ...

9. EXCLUSIVE: Name of baby pygmy hippo born at Virginia zoo has ...

   www.aol.com/news/exclusive-name-baby-pygmy-hippo...

   After a public vote, the hippo has been named Poppy, zoo director Jim Andelin revealed exclusively on TODAY Jan. 6. The moniker picked up 52.8% of the vote, while the other choice, Hammie Mae ...