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Ulam — Prime Number Spiral Heavyweight Tee
$38.00
In 1963 Stanislaw Ulam, idle during a lecture, wrote the integers in a spiral and marked the primes. Diagonals appeared — unexplained, persistent. 3,721 integers, 519 primes. The pattern holds.
Printed on garment-dyed heavyweight cotton.
· Garment-dyed, ring-spun heavyweight cotton
· Relaxed unisex fit
· Printed in the USA
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