2 × 5 × 139 × 15391

Prime Factor Structure

Factorization String 2 × 5 × 139 × 15391

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 38,787,840

Proper Divisor Sum 17,394,350

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #21393481 ← → #21393521

1 2 5 10 139 278 695 1,390 15,391 30,782 76,955 153,910 2,139,349 4,278,698 10,696,745 21,393,490

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

21,393,490 10,696,745 32,090,236 16,045,118 8,022,559 24,067,678 12,033,839 36,101,518 18,050,759 54,152,278 27,076,139 81,228,418 40,614,209 121,842,628 60,921,314 30,460,657 91,381,972 45,690,986 22,845,493 68,536,480 34,268,240 17,134,120 8,567,060 4,283,530 2,141,765 6,425,296 3,212,648 1,606,324 803,162 401,581 1,204,744 602,372 301,186 150,593 451,780 225,890 112,945 338,836 169,418 84,709 254,128 127,064 63,532 31,766 15,883 47,650 23,825 71,476 35,738 17,869 53,608 26,804 13,402 6,701 20,104 10,052 5,026 2,513 7,540 3,770

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