15263
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 15264
- 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
- 15262
- Möbius Function
- -1
- Radical
- 15263
- 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
- 177
- 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
- 1781
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Denominators of continued fraction convergents to sqrt(69).at n=8A041121
- Denominators of continued fraction convergents to sqrt(276).at n=12A041519
- Denominators of continued fraction convergents to sqrt(621).at n=6A042193
- Primes whose consecutive digits differ by 3 or 4.at n=32A048415
- Primes p such that number of primes produced according to rules stipulated in Honaker's A048853 is 4.at n=37A050666
- Numbers k such that k!! + 2^9 is prime.at n=12A076196
- Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d=2,4 or 6) and forming d-pattern=[6, 2,6]; short d-string notation of pattern = [626].at n=20A078854
- Value of C in y = x^2 + 5x + C such that y is prime for all x = 0 to 3.at n=36A097434
- Primes for which the weight as defined in A117078 is 11 and the gap as defined in A001223 is 6.at n=31A119597
- Values of A134204(n) for n in A133242.at n=29A133243
- Primes congruent to 41 mod 43.at n=36A142290
- Primes congruent to 35 mod 47.at n=36A142386
- Primes congruent to 52 mod 53.at n=33A142582
- Primes congruent to 28 mod 55.at n=41A142621
- Primes congruent to 41 mod 59.at n=24A142768
- Primes congruent to 13 mod 61.at n=32A142811
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (-1, 1, 0), (1, 0, -1), (1, 1, 0)}.at n=9A149097
- Primes in A152535.at n=21A152563
- Primes p such that 6p-7, 6p-5, 6p-1 are all prime.at n=33A157042
- Honaker emirps: terms in A033548 that are emirps.at n=22A161118