Number 20991

Representations of 20991
Greek numeral
βMαϡϟαʹ
Arabic numeral
٢٠٩٩١
Roman numeral
XXCMXCI
Maya numeral
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Chinese numeral
二万零九百九十一
Hebrew numeral
כ׳ תתקצא
20991 in different numeral systems
Binary
101000111111111
Base-3
1001210110
Base-4
11013333
Base-5
1132431
Base-6
241103
Base-7
115125
Base-8
50777
Duodecimal
10193
Hex
51ff
Vigesimal
2c9b
Base-24
1caf
Base-36
g73
Negabinary
101011000000011
Factorization
Prime factors
3, 6997
Divisors
1, 3, 6997, 20991
Sum of divisors other than 20991
7001
Product of prime factors
20991 = 3 x 6997
Characteristics
Difference of 2 squares Odd Composite Deficient
Related primes
Prime number before 20991
20983
Prime number after 20991
21001