Five is the only prime number to end in the digit 5, because all other numbers written with a 5 in the ones-place under the decimal system are multiples of five.
: something having five units or members especially : a basketball team 4 : a 5-dollar bill 5 : a slapping of extended hands by two people (as in greeting or celebration) I slapped him five after he scored
Oct 31, 2025 · A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ५ (5)). See 5 § Evolution of the Arabic digit for more.
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.
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