11 + 13 = 24........there are 24 hours in a day on earth......a coincidence???

4, 6...........8. 9. 10........the 1st 5 non primes......................0 , 1, 2, 3, 4, 5, 6....................throwing out 0 and 1...for the moment......the next two whole numbers are both prime......2 and 3....a right triangle.....with the two lesser sides of 2 and 3....has a hyp of the square root of 13...which starts....3.60........full circle..........................coincidence??   8 + 9 + 10 = 27...............like e....relatively......

Even more interesting grouping them like that.....is a 2 and 3....................4 and 6 sum to 10........8, 9 and 10 to 27..............like e.......2.71.......the 1st 3 numbers....sum to 10.....the base of the number system..............2.718......the 1st 4.....sum to 18.......like 180......degrees.....pi in the unit circle..............1st 4......like 14i......

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Prime number

A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. Wikipedia