Previous Page...   Printer Version Science Constants - Brun's Constant Symbol: B Value: 1.9021605824  Category: - General Mathematical Constants Description: Given by:     and defined as the sum of the reciprocals of all twin primes.   [ H O M E ] [ S C I E N C E ] [ M A T H S ] [ A S T R O N O M Y ] [ Download ] [ Shop ] [ Contact ] [ About ]