Your guide to the number 5, an odd number which is prime. Mathematical info, prime factorization, fun facts and numerical data for STEM, education and fun. Properties of 5: prime decomposition, primality test, divisors, arithmetic properties, and conversion in binary, octal, hexadecimal, etc. Learn the different ways number 5 can be represented. See the number five on a number line, five frame, ten frame, numeral, word, dice, dominoes, tally mark, fingers and picture representations.

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