5018
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 8148
- Proper Divisor Sum (Aliquot Sum)
- 3130
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2304
- Möbius Function
- -1
- Radical
- 5018
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 134
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Numbers that are the sum of 6 positive 6th powers.at n=37A003362
- Numbers that are the sum of 11 positive 7th powers.at n=28A003378
- Coordination sequence T2 for Zeolite Code BIK.at n=44A008048
- Coordination sequence T6 for Zeolite Code MTT.at n=44A008194
- If a, b in sequence, so is ab+6.at n=44A009307
- Number of ordered quadruples of integers from [ 1,n ] with no common factors between triples.at n=19A015635
- a(n) = position of 3*(n^2) in A000408.at n=44A024800
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 5.at n=27A031418
- Numbers whose base-5 representation contains exactly two 0's and three 3's.at n=10A045198
- Length of hypotenuse squared in right triangle formed by a prime spiral plotted in Cartesian coordinates.at n=15A048851
- CIK transform of partition numbers A000041.at n=11A055890
- a(n) = prime(n+1)^2 + prime(n)^2.at n=14A069484
- Numbers n such that nextprime(n^2)-n^2 (n>=1) sets a new record.at n=22A070316
- Sum of n-th antidiagonal of A082191.at n=19A082195
- Integers m such that the base-10 digit concatenation 2//m//3//m//5//m...//prime(49)//m//prime(50) is prime.at n=11A084048
- Least positive integer that can be represented as sum of a semiprime and a square in exactly n ways.at n=42A101181
- Values of k for which 7m+1, 8m+1 and 11m+1 are prime, with m = 1848k + 942.at n=44A101186
- Integer part of n#/((p-11)# 11#), where p=preceding prime to n.at n=49A102789
- Expansion of 1/((1-xc(x)-x^2c(x)^2)(1-x^2c(x))) with c(x) the g.f. of A000108.at n=8A109268
- Concerning the popular MMORPG "Runescape" by JAGeX corporation, this sequence gives the number of experience points needed for a given level in a skill.at n=20A111078