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99 is: . a composite number; a square-prime, of the form (p 2, q).It is the 11th composite number of this form and the third of the form (3 2, q).It has an aliquot sum of 57, within an aliquot sequence of two composite numbers (99,57,23,1,0), to the Prime in the 23-aliquot tree.
In September 2021, the Bitcoin Law made bitcoin legal tender in El Salvador, alongside the US dollar. [4] The adoption has been criticized internationally and within El Salvador. [ 4 ] [ 119 ] In 2022, the International Monetary Fund (IMF) urged El Salvador to reverse its decision. [ 120 ]