3 × 5 × 13 × 1987

Prime Factor Structure

Factorization String 3 × 5 × 13 × 1987

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 667,968

Proper Divisor Sum 280,503

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #387463 ← → #387493

1 3 5 13 15 39 65 195 1,987 5,961 9,935 25,831 29,805 77,493 129,155 387,465

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

387,465 1,162,396 581,198 290,599 871,798 435,899 1,307,698 653,849 1,961,548 980,774 490,387 1,471,162 735,581 2,206,744 1,103,372 551,686 275,843 827,530 413,765 1,241,296 620,648 310,324 155,162 77,581 232,744 116,372 58,186 29,093 87,280 43,640 21,820 10,910 5,455 16,366 8,183 24,550 12,275 36,826 18,413 55,240 27,620 13,810 6,905 20,716 10,358 5,179 15,538 7,769 23,308 11,654 5,827 17,482 8,741 26,224 13,112 6,556 3,278 1,639 4,918 2,459

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.