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Properties of the Number 20753

Twenty Thousand Seven Hundred Fifty-Three

Basics

Value: 20752 → 20753 → 20754

Parity: odd

Prime: Yes

Previous Prime: 20749

Next Prime: 20759

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 20753

Divisors: 1, 20753

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000100010001

Octal: 50421

Duodecimal: 10015

Hexadecimal: 5111

Square: 430687009

Square Root: 144.05901568454507

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Primes which can be expressed as sum of distinct powers of 4. A77718
T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7. A252167
Primes which are the sum of three positive 4th powers. A85318
Prime numbers that are the sum of three distinct positive fourth powers. A126657
Primes p such that q = p+d (with d >= 6) is the next prime and both p and q are Sophie Germain primes. A128825
Prime time primes (of the form HMMSS with primes H < 24 and MM, SS < 60) such that the corresponding number of seconds after midnight is also prime. A295000
Numbers of the form HMMSS with primes H < 24 and MM, SS < 60, for which the number of seconds after midnight, 3600·H+60·MM+SS, is also prime. A295011
Prime time primes on 6-digit clocks, second definition: primes of the form HMMSS where H, MM, SS are primes, H < 24, MM and SS < 60. A295013
Numbers at the start of a run of 2 or more consecutive primes that are Sophie Germain primes. A339474
a(1) = 2; a(n) is the smallest prime > a(n-1) such that a(n) + a(n-1) is a square. A62064