Plastic Number

Plastic number is the constant that is the unique real solution of the cubic equation x3 = x +1. It is a mathematical constant in which 10,000,000,000 digits have been computed so far. The name was given to this number as plastic by Dom Hans van der Laan. It is the smallest Pisot–Vijayaraghavan number.

Constant Name

Plastic Number

Unit : ρ

Value : 1.32471 79572 44746 02596

Plastic number can also be termed as plastic constant, minimal Pisot number. Sometimes, it can also be termed as silver ratio.

Plastic number can also be termed as plastic constant, minimal Pisot number. Sometimes, it can also be termed as silver ratio.

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