Number 1681

Representations of 1681
Greek numeral
͵αχπαʹ
Sanskrit numeral
१६८१
Arabic numeral
١٦٨١
Roman numeral
MDCLXXXI
Maya numeral
●●●●
●●●●
●
Chinese numeral
一千六百八十一
Hebrew numeral
א׳ תרפא
1681 in different numeral systems
Binary
11010010001
Base-3
2022021
Base-4
122101
Base-5
23211
Base-6
11441
Base-7
4621
Base-8
3221
Duodecimal
b81
Hex
691
Vigesimal
441
Base-24
2m1
Base-36
1ap
Negabinary
1101110010001
Factorization
Prime factors
41
Divisors
1, 41, 1681
Sum of divisors other than 1681
42
Product of prime factors
1681 = 41 x 41
Characteristics
Square Perfect Power Difference of 2 squares Odd Composite Deficient
Related primes
Number 1681 prime
14327
Prime number before 1681
1669
Prime number after 1681
1693