3 × 7 × 20521

Prime Factor Structure

Factorization String 3 × 7 × 20521

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 656,704

Proper Divisor Sum 225,763

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #430921 ← → #430949

1 3 7 21 20,521 61,563 143,647 430,941

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

430,941 1,292,824 646,412 323,206 161,603 484,810 242,405 727,216 363,608 181,804 90,902 45,451 136,354 68,177 204,532 102,266 51,133 153,400 76,700 38,350 19,175 57,526 28,763 86,290 43,145 129,436 64,718 32,359 97,078 48,539 145,618 72,809 218,428 109,214 54,607 163,822 81,911 245,734 122,867 368,602 184,301 552,904 276,452 138,226 69,113 207,340 103,670 51,835 155,506 77,753 233,260 116,630 58,315 174,946 87,473 262,420 131,210 65,605 196,816 98,408

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