3 × 5 × 7 × 17 × 157

Prime Factor Structure

Factorization String 3 × 5 × 7 × 17 × 157

Distinct Prime Factors 5

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 546,048

Proper Divisor Sum 265,803

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #280243 ← → #280249

1 3 5 7 15 17 21 35 51 85 105 119 157 255 357 471 595 785 1,099 1,785 2,355 2,669 3,297 5,495 8,007 13,345 16,485 18,683 40,035 56,049 93,415 280,245

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

280,245 840,736 420,368 210,184 105,092 52,546 26,273 78,820 39,410 19,705 59,116 29,558 14,779 44,338 22,169 66,508 33,254 16,627 49,882 24,941 74,824 37,412 18,706 9,353 28,060 14,030 7,015 21,046 10,523 31,570 15,785 47,356 23,678 11,839 35,518 17,759 53,278 26,639 79,918 39,959 119,878 59,939 179,818 89,909 269,728 134,864 67,432 33,716 16,858 8,429 25,288 12,644 6,322 3,161 9,484 4,742 2,371 7,114 3,557 10,672

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