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33 is the 21st composite number, and 8th distinct semiprime (third of the form where is a higher prime). [1] It is one of two numbers to have an aliquot sum of 15 = 3 × 5 — the other being the square of 4 — and part of the aliquot sequence of 9 = 3 2 in the aliquot tree (33, 15, 9, 4, 3, 2, 1).
Arsenic is a chemical element with the symbol As and the atomic number 33. It is a metalloid and one of the pnictogens, and therefore shares many properties with its group 15 neighbors phosphorus and antimony. Arsenic is a notoriously toxic heavy metal.
34 is the twelfth semiprime, [1] with four divisors including 1 and itself. Specifically, 34 is the ninth distinct semiprime, it being the sixth of the form .Its neighbors 33 and 35 are also distinct semiprimes with four divisors each, where 34 is the smallest number to be surrounded by numbers with the same number of divisors it has.
The atomic number of germanium; The freezing point of water at standard atmospheric pressure in degrees Fahrenheit; In the Standard Model of particle physics, there are 32 degrees of freedom among the leptons and all bosons that interact with them (including the graviton, which is generally expected to exist, and assuming there are no right-handed neutrinos) [citation needed]
The aliquot sum of 35 is 13, within an aliquot sequence of only one composite number (35,13,1,0) to the Prime in the 13-aliquot tree. 35 is the second composite number with the aliquot sum 13; the first being the cube 27. 35 is the last member of the first triple cluster of semiprimes 33, 34, 35.
It is a square number (33 squared), a nonagonal number, [1] a 32-gonal number, a 364-gonal number, and a centered octagonal number. [2] 1089 is the first reverse-divisible number. The next is 2178 (= 1089 × 2 = 8712/4), and they are the only four-digit numbers that divide their reverse.
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the 23rd prime number, following 79 (of which it is also a cousin prime) and preceding 89. a Sophie Germain prime. [1] a safe prime. [2] a Chen prime. [3] an Eisenstein prime with no imaginary part and real part of the form 3n − 1. a highly cototient number. [4] the number of primes that are right-truncatable. [5] a super-prime, because 23 is ...