139 × 157

Prime Factor Structure

Factorization String 139 × 157

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 22,120

Proper Divisor Sum 297

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #21821 ← → #21839

1 139 157 21,823

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

21,823 65,470 32,735 98,206 49,103 147,310 73,655 220,966 110,483 331,450 165,725 497,176 248,588 124,294 62,147 186,442 93,221 279,664 139,832 69,916 34,958 17,479 52,438 26,219 78,658 39,329 117,988 58,994 29,497 88,492 44,246 22,123 66,370 33,185 99,556 49,778 24,889 74,668 37,334 18,667 56,002 28,001 84,004 42,002 21,001 63,004 31,502 15,751 47,254 23,627 70,882 35,441 106,324 53,162 26,581 79,744 39,872 19,936 9,968 4,984

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