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2038 Problem: The Unix Clock Is About to Reset to Zero
Unix systems use a signed 32-bit integer to count the number of seconds elapsed since the epoch: 00:00:00 UTC on January 1, 1970.
This counter will reach 2147483647 at 03:14:07 UTC on January 19, 2038 — then overflow and jump back to the year 1901.
This is known as the Y2K38 problem, similar in nature to the Y2K crisis at the end of the 20th century: both stem from insufficient numerical range.
The solution is to upgrade timestamps to 64-bit integers, which would delay the next overflow until approximately 292 billion years from now.
Notably, 2147483647 is also a prime number.
It is the 8th Mersenne prime (where n = 31), and one of only four known double Mersenne primes — meaning 2^{(2^n - 1)} - 1 is also prime.
URL: 2147483647.org
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