3 × 7 × 18661

Prime Factor Structure

Factorization String 3 × 7 × 18661

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 597,184

Proper Divisor Sum 205,303

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #391879 ← → #391889

1 3 7 21 18,661 55,983 130,627 391,881

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

391,881 1,175,644 587,822 293,911 881,734 440,867 1,322,602 661,301 1,983,904 991,952 495,976 247,988 123,994 61,997 185,992 92,996 46,498 23,249 69,748 34,874 17,437 52,312 26,156 13,078 6,539 19,618 9,809 29,428 14,714 7,357 22,072 11,036 5,518 2,759 8,278 4,139 12,418 6,209 18,628 9,314 4,657 13,972 6,986 3,493 10,480 5,240 2,620 1,310 655 1,966 983 2,950 1,475 4,426 2,213 6,640 3,320 1,660 830 415

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