Because it is important to repeat things.......104, 729 is the 10 000th prime.....10^4, 401, the 79th prime, 79 spins into 97, inside the 3rd stand dev....99.7%  79 to 97....nine to nine connection, a natural end, 0 - 9, 10 single digit numbers.......ALL of them, infinity..

79 is in 104, 729, 401, 1st 3 of the 10 000th prime, 79 to 97, last 4, - 4 from 100, 14i.......a triangle of 4 primes, cut it in half, two triangles, from one..................9 to 9.........3.14159...........1st 6...

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grouping the primes in sets of 625 makes perfect sense.....401, the 79th prime, like a triangle, last 4 under 100............401 + 79 = 480.........4 + 8 = 12.......and a zero...