21391793

Prime Factor Structure

Factorization String 21391793

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 21,391,794

Proper Divisor Sum 1

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #21391787 ← → #21391801

1 21,391,793

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

21,391,793 64,175,380 32,087,690 16,043,845 48,131,536 24,065,768 12,032,884 6,016,442 3,008,221 9,024,664 4,512,332 2,256,166 1,128,083 3,384,250 1,692,125 5,076,376 2,538,188 1,269,094 634,547 1,903,642 951,821 2,855,464 1,427,732 713,866 356,933 1,070,800 535,400 267,700 133,850 66,925 200,776 100,388 50,194 25,097 75,292 37,646 18,823 56,470 28,235 84,706 42,353 127,060 63,530 31,765 95,296 47,648 23,824 11,912 5,956 2,978 1,489 4,468 2,234 1,117 3,352 1,676 838 419 1,258 629

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