11503
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 11504
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 11502
- Möbius Function
- -1
- Radical
- 11503
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 236
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1388
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Numbers k such that 33*2^k - 1 is prime.at n=36A002240
- Numbers k such that the continued fraction for sqrt(k) has period 96.at n=27A020435
- Primes that remain prime through 3 iterations of function f(x) = 8x + 9.at n=7A023295
- Primes that remain prime through 4 iterations of function f(x) = 8x + 9.at n=2A023323
- Least prime in A031934 (lesser of 16-twins) whose distance to the next 16-twin is 6*n.at n=30A052357
- Prime number spiral (clockwise, North spoke).at n=19A054551
- Primes on axis of Ulam square spiral (with rows ... / 7 8 9 / 6 1 2 / 5 4 3 / ... ) with origin at (1).at n=45A078784
- Primes p such that p-1 and p+1 are both divisible by fourth powers.at n=8A086709
- Irregular primes whose indices are irregular primes of order one.at n=31A090869
- Primes p such that little googol + p is prime.at n=25A108255
- Number of primes between A001605(n) and A001605(n+1).at n=46A134851
- Prime numbers of the form 24*p + 7 where p is prime.at n=37A135985
- Primes congruent to 33 mod 37.at n=38A142142
- Primes congruent to 23 mod 41.at n=37A142220
- Primes congruent to 22 mod 43.at n=30A142271
- Primes congruent to 35 mod 47.at n=27A142386
- Primes congruent to 37 mod 49.at n=33A142445
- Primes congruent to 2 mod 53.at n=30A142532
- Primes congruent to 8 mod 55.at n=38A142607
- Primes congruent to 46 mod 57.at n=33A142693