247 (number)

247 (two hundred [and] forty-seven) is the natural number following 246 and preceding 248.

This article is about the number 247. It is not to be confused with 24/7.
← 246 247 248 →
Cardinaltwo hundred forty-seven
Ordinal247th
(two hundred forty-seventh)
Factorization13 × 19
Greek numeralΣΜΖ´
Roman numeralCCXLVII
Binary111101112
Ternary1000113
Senary10516
Octal3678
Duodecimal18712
HexadecimalF716

Additionally, 247 is:

  • a semiprime.
  • a brilliant number (the product of two primes with the same number of digits).
  • a pentagonal number.
  • palindromic in base 18 (DD18).
  • a Harshad number in bases 10, 14, 19, 20, 27, 39, 40, 58, 77, 79, 115, 118, 229 and 235.
  • the smallest number which can be expressed as the difference between two integers that contain together all the decimal digits 0–9. i.e. 247 = 50123 - 49876.
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