Ohsawa's Spiral and the Prime Numbers An Unobserved Correlation Between Spectroscopic Classification and Biological Function of the Elements Lithium, Sodium, Potassium — what a farmer sees in the periodic table that 160 years of mathematics did not

In 1859, Bernhard Riemann asked where the prime numbers fall. In 2000, the Clay Mathematics Institute offered $1,000,000 to whoever proves that all non-trivial zeros of the zeta function lie on the line Re(s) = 1/2. For 160 years, mathematics has studied the primes as abstract objects — WHERE they are, HOW they distribute, HOW FAST they grow. No one has asked what they DO. This paper reports a previously unobserved correlation: in the periodic table, elements whose atomic number Z is a prime number are systematically associated with biological SIGNAL functions (nerve transmission, metabolic regulation, enzymatic catalysis), while elements with composite Z are associated with STRUCTURAL functions (bones, water, respiration). The three pillars of nerve signal — lithium (Z=3), sodium (Z=11), potassium (Z=19) — are all primes, all Group 1, all with one neutron more than their protons. Technetium (Z=43, prime) is the only element below bismuth with no stable isotope — a "zero" in the periodic table at a prime position. The primes were never abstract. They are the map of function in matter. The proof was always in the elements — and it was free.