Methods and computing devices enable users to identify documents using a hash value mapped to a word mnemonic for easy recall and comparison. A hash algorithm may be applied a document to generate a distinguishing hash value. The hash value is mapped to a plurality of words to form the mnemonic. To obtain the words, the hash value may be mapped to word indices used to identify particular words in word lists. Word lists may include a list of nouns, a list of verbs, and a list of adverbs or adjectives, so that the resulting three word mnemonics are memorable. More word lists may be used to map hash values to four-, five- or more word mnemonics. The number-to-mnemonic mapping methods may be used to map large numbers, such as account numbers, telephone numbers, etc. into mnemonics which are easier for people to remember and compare.