2011 is a prime number.
2011 has the representation 211 - 37.
2011 is the sum of 11 consecutive primes: 2011 = 157 + 163 + 167 + 173 + 179 + 181 + 191 + 193 + 197 + 199 + 211.
2011 is a number such that first reversing the digits and then squaring equals the result of first squaring and then reversing the digits: 11022 =1214404 and 20112 = 4044121.
28 is 2011 in base 5.
The sum of the digits of 2011 is equal to the number of digits: 2 + 0 + 1 + 1 = 4. The digit sum is a square and a power of 2.
The next prime date from now (month, day, and year are primes) is 2/2/2011. Note that 222011 is a prime.In the Aeon Flux television series and film (2005), 99 percent of the world's population is wiped out by a mysterious virus in the year 2011.
The Peace Corps marks its 50th anniversary in the year 2011. It is also the 5oth anniversary of the first manned mission to space.
2011 is the 100th anniversary of the launch of the Titanic on May 31, 1911.
2011 is designated the International Year of Chemistry.
2 comments:
2011 is the number of toothpicks in the sexagesimal stage of the toothpick sequence
Otras propiedades del 2011 y su relación con los números primos.
http://hojamat.es/parra/prop2011.pdf
Rafael Parra Machio
Twitter rafaelito_p
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