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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

+ The first three digits in the decimal expansion of the Euler-Mascheroni constant (gamma = 0.5772156649...). It is not yet known if the constant is a rational number, i.e., the ratio of two integers a/b. [Kulsha]

+ 577 is one of only two prime numbers with squares of the form AABCBC. Can you find the other? [Axoy]

+ The number of isomers of the C60H3 Buckminsterfullerene soccerball-shaped molecule. [Beedassy]

+ Smallest prime Fermat near miss, namely z such that x^3 + y^3 = z^3 - 1 (x less than y, y less than z). [Post]

+ The largest prime on the cover of Marcus du Sautoy's book "The Music of the Primes" (American Edition).

+ The larger of only two 3-digit primes that remain prime when inserting one, two or three zeros between each digit, i.e., 50707, 5007007, 500070007 are primes. The other such prime is 131. [Loungrides]

+ The smallest prime that can be expressed as sum of powers with the even digits as bases and exponents, i.e., 0^6+2^8+4^4+6^0+8^2 = 577. [Loungrides]

+ The larger of only two primes p, smaller than a thousand, such that p and p^3 have the same sum of digits. The other is 487. [Loungrides]

+ There are 577 prime-digit primes (other than 577) less than a million. [Merickel]

+ The only 3-digit prime p such that 3p^3 contains three consecutive zeros in its decimal representation, i.e., 3*577^3=576300099. [Loungrides]

+ A prime ruler can be purchased at Kyoto University for 577 yen.

(There is one curio for this number that has not yet been approved by an editor.)

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