21391651

Prime Factor Structure

Factorization String 21391651

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 21,391,652

Proper Divisor Sum 1

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #21391649 ← → #21391703

1 21,391,651

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

21,391,651 64,174,954 32,087,477 96,262,432 48,131,216 24,065,608 12,032,804 6,016,402 3,008,201 9,024,604 4,512,302 2,256,151 6,768,454 3,384,227 10,152,682 5,076,341 15,229,024 7,614,512 3,807,256 1,903,628 951,814 475,907 1,427,722 713,861 2,141,584 1,070,792 535,396 267,698 133,849 401,548 200,774 100,387 301,162 150,581 451,744 225,872 112,936 56,468 28,234 14,117 42,352 21,176 10,588 5,294 2,647 7,942 3,971 11,914 5,957 17,872 8,936 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.