65 is in the decimal expansion of pi....................the pf sums to 65...............6.5 is its dead center.............2, 3........is how the primes start out................whose product and sum..........are 6 and 5 respectfully.........


Pi - Math is Fun

https://www.mathsisfun.com/numbers/pi.html

1. Cached
2. Similar

Draw a circle with a diameter (all the way across the circle) of 1. Then the circumference (all the way around the circle) is 3.14159265... a number known as Pi.