5² × 13 × 23 × 29

Prime Factor Structure

Factorization String 5^2 × 13 × 23 × 29

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 312,480

Proper Divisor Sum 95,705

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #216761 ← → #216779

1 5 13 23 25 29 65 115 145 299 325 377 575 667 725 1,495 1,885 3,335 7,475 8,671 9,425 16,675 43,355 216,775

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

216,775 650,326 325,163 975,490 487,745 1,463,236 731,618 365,809 1,097,428 548,714 274,357 823,072 411,536 205,768 102,884 51,442 25,721 77,164 38,582 19,291 57,874 28,937 86,812 43,406 21,703 65,110 32,555 97,666 48,833 146,500 73,250 36,625 109,876 54,938 27,469 82,408 41,204 20,602 10,301 30,904 15,452 7,726 3,863 11,590 5,795 17,386 8,693 26,080 13,040 6,520 3,260 1,630 815 2,446 1,223 3,670 1,835 5,506 2,753 8,260

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