Electron spin....like pi....+ or - 1/2......1/2 = 0.5..........50 spun....

53 and 59......the 1st 2 primes greater than 50....sum to 112......like the prime fundamental backwards....2 - 11..........which gives 5 13s...........13 is not so bad........

53
59

Extracting just the single digits.........3 and 9.......3/9 = 1/3.....like 13.........

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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