Namely (assuming 65537 is the largest Fermat prime), an odd-sided polygon is constructible if and only if it has 3, 5, 15, 17, 51, 85, 255, 257, 771, 1285, 3855, 4369, 13107, 21845, 65535, 65537, 196611, 327685, 983055, 1114129, 3342387, 5570645, 16711935, 16843009, 50529027, 84215045, 252645135, 286331153, 858993459, 1431655765, or 4294967295 sides.

[5] The number 4,294,967,295, equivalent to the hexadecimal value FFFFFFFF16, is the maximum value for a 32-bit unsigned integer in computing.

The presence of the value may reflect an error, overflow condition, or missing value.

[7] Being an odd value, its appearance may reflect an erroneous (misaligned) memory address.

Such a value may also be used as a sentinel value to initialize newly allocated memory for debugging purposes.

In 2004, 800 aircraft over Los Angeles were put in danger when the LA Air Route Traffic Control Center lost radio contact with all of the aircraft for about three hours, delaying 400 flights and cancelling 600, due to a computer design that kept time by starting at 4,294,967.295 seconds and counting down to zero, or 49 days, 17 hours, 2 minutes and 47.295 seconds.

Some people were aware that the system needed to be restarted at least every 30 days, but the root problem was the choice of such a small number.