1981
Number 1981 properties
- 1981 is an odd number.
Number 1981 - properties and curiosities
1981 (number)
Prime factorization
Prime factorization of 1981: 7 × 283.
Divisors
Divisor count: 4
1, 7, 283, 1981
Factors of 1981 are: 1, 7, 283, 1981.
Representations
In octal, 1981 is represented as 3675.
In binary, 1981 is represented as 11110111101.
In hex, 1981 is represented as 7BD.
Roman numeral: MCMLXXXI
Curiosities
- 1981 has unique arithmetic behavior worth exploring through its factors and representations.
Related numbers
Nearby primes: 1951, 1973, 1979, 1987, 1993, 1997
Quick answers
Is 1981 prime?
No, 1981 is not prime.
What are the factors of 1981?
1, 7, 283, 1981
What is 1981 in binary?
11110111101