3 × 7 × 19 × 647

Prime Factor Structure

Factorization String 3 × 7 × 19 × 647

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 414,720

Proper Divisor Sum 156,567

Digit Sum / Digital Root 24 (Root: 6)

Adjacent Primes #258143 ← → #258157

1 3 7 19 21 57 133 399 647 1,941 4,529 12,293 13,587 36,879 86,051 258,153

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

258,153 774,460 387,230 193,615 580,846 290,423 871,270 435,635 1,306,906 653,453 1,960,360 980,180 490,090 245,045 735,136 367,568 183,784 91,892 45,946 22,973 68,920 34,460 17,230 8,615 25,846 12,923 38,770 19,385 58,156 29,078 14,539 43,618 21,809 65,428 32,714 16,357 49,072 24,536 12,268 6,134 3,067 9,202 4,601 13,804 6,902 3,451 10,354 5,177 15,532 7,766 3,883 11,650 5,825 17,476 8,738 4,369 13,108 6,554 3,277 9,832

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