3 × 7 × 13 × 397

Prime Factor Structure

Factorization String 3 × 7 × 13 × 397

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 178,304

Proper Divisor Sum 69,923

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #108379 ← → #108401

1 3 7 13 21 39 91 273 397 1,191 2,779 5,161 8,337 15,483 36,127 108,381

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

108,381 325,144 162,572 81,286 40,643 121,930 60,965 182,896 91,448 45,724 22,862 11,431 34,294 17,147 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 4,130

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