Consider this operation I call it EO transformation:
15=3*5 -->
3+5=8-->
8=2*4 -->
2+4=6 -->
6=2*3-->
2+3=5(which is a prime)
My postulate is that, for any non-prime number, 5 and 7 would be the most frequently appeared result.
Could any Mathematician please prove or disprove this assertion?
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