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Representation
A 512-bit register can store 2512 different values. The range of integer values that can be stored in 512 bits depends on the integer representation used.
The maximum value of an unsigned 512-bit integer is 2512 − 1, written in decimal as 13,407,807,929,942,597,099,574,024,998,205,846,127,479,365,820,592,393,377,723,561,443,721,764,030,073,546,976,801,874,298,166,903,427,690,031,858,186,486,050,853,753,882,811,946,569,946,433,649,006,084,095 or approximately 1.34078 x 10154, or textualized as over 13.407 Quinquagintillion.
Hardware
The Intel Xeon Phi has a vector processing unit with 512-bit vector registers, each one holding sixteen 32-bit elements or eight 64-bit elements, and one instruction can operate on all these values in parallel. However, the Xeon Phi's vector processing unit does not operate on individual numbers that are 512 bits long.[1]
This article uses material from the Wikipedia article 512-bit_computing, and is written by contributors.
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