d=2^32; n=3000; 1-e^(-n(n-1)/(2d))

Input interpretation

1 - e^(-n×(n - 1)/(2 d)) where d = 2^32, n = 3000

Result

1 - 1/e^(1124625/1073741824)

Alternate form

(e^(1124625/1073741824) - 1)/e^(1124625/1073741824)
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