# What is the largest integer that Pd can represent?

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Because Pd uses a 32-bit float as the only internal representation of numbers, it is limited to 6 digits of accuracy. 999,999 is the largest number that can be represented in Pd without scientific notation.

999,999 in binary is `1111 0100 0010 0011 1111`

But Pd cannot represent this number exactly `1111 1111 1111 1111 1111`

(1,048,575)

but it can represent this number exactly `0111 1111 1111 1111 1111`

(524,287)

Therefore Pd can represent 19-bits of integer accurately.