3 × 7 × 307 × 643

Prime Factor Structure

Factorization String 3 × 7 × 307 × 643

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 6,347,264

Proper Divisor Sum 2,201,843

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #4145419 ← → #4145423

1 3 7 21 307 643 921 1,929 2,149 4,501 6,447 13,503 197,401 592,203 1,381,807 4,145,421

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

4,145,421 12,436,264 6,218,132 3,109,066 1,554,533 4,663,600 2,331,800 1,165,900 582,950 291,475 874,426 437,213 1,311,640 655,820 327,910 163,955 491,866 245,933 737,800 368,900 184,450 92,225 276,676 138,338 69,169 207,508 103,754 51,877 155,632 77,816 38,908 19,454 9,727 29,182 14,591 43,774 21,887 65,662 32,831 98,494 49,247 147,742 73,871 221,614 110,807 332,422 166,211 498,634 249,317 747,952 373,976 186,988 93,494 46,747 140,242 70,121 210,364 105,182 52,591 157,774

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