248 (number)
Appearance
248 (two hundred [and] forty-eight) is the natural number following 247 and preceding 249.
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Cardinal | two hundred forty-eight | |||
Ordinal | 248th (two hundred forty-eighth) | |||
Factorization | 23 × 31 | |||
Greek numeral | ΣΜΗ´ | |||
Roman numeral | CCXLVIII | |||
Binary | 111110002 | |||
Ternary | 1000123 | |||
Senary | 10526 | |||
Octal | 3708 | |||
Duodecimal | 18812 | |||
Hexadecimal | F816 |
Additionally, 248 is:
- a nontotient.
- a refactorable number.
- an untouchable number.[1]
- palindromic in bases 13 (16113), 30 (8830), 61 (4461) and 123 (22123).
- a Harshad number in bases 3, 4, 6, 7, 9, 11, 13 (and 18 other bases).
- part of the 43-aliquot tree. The aliquot sequence starting at 248 is: 248, 232, 218, 112, 136, 134, 70, 74, 40, 50, 43, 1, 0.
The exceptional Lie group E8 has dimension 248.