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Dirac large number
1042
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Order-of-magnitude coincidences near 10⁴² in Dirac’s large-number hypothesis
Dirac noticed ratios near 10⁴⁰–10⁴² between atomic and cosmological scales. The exponent is a scale, not an integer 42 sitting in the world.
Scale · not a count
1042
Dirac, Nature 139 (1937). Ratios near ten to the forty and ten to the forty-two. The 42 is the exponent.
What it supports
A published large-number observation (1937–) that the Book keeps on the horizon plate.
What it does not
Not proof of a 42-law. Not the same object as Adams, rainbow, or Z=42.
ExactnessApproximate
Form10^42
Unitdimensionless
Strengthattested