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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The first year of the next "prime decade" (formally called a prime quadruple) that will contain the maximum of four prime years. This will not occur again until the 3250's. 2081 = 1802 + (1802). It is the only known prime with this property. [Firoozbakht] The fifth and largest known prime in the sequence (2^prime(n) + 2^fibonacci(n) + 1) which seems to yield primes only for n=1 (2^2+2^1+1 = 7), n=2 (2^3+2^1+1 = 11), n=3 (2^5+2^2+1 = 37), n=4 (2^7+2^3+1 = 137) and n=5 (2^11+2^5+1 = 2081). [Hasler]
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