3² × 7 × 31 × 71

Prime Factor Structure

Factorization String 3^2 × 7 × 31 × 71

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 239,616

Proper Divisor Sum 100,953

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #138661 ← → #138679

1 3 7 9 21 31 63 71 93 213 217 279 497 639 651 1,491 1,953 2,201 4,473 6,603 15,407 19,809 46,221 138,663

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

138,663 415,990 207,995 623,986 311,993 935,980 467,990 233,995 701,986 350,993 1,052,980 526,490 263,245 789,736 394,868 197,434 98,717 296,152 148,076 74,038 37,019 111,058 55,529 166,588 83,294 41,647 124,942 62,471 187,414 93,707 281,122 140,561 421,684 210,842 105,421 316,264 158,132 79,066 39,533 118,600 59,300 29,650 14,825 44,476 22,238 11,119 33,358 16,679 50,038 25,019 75,058 37,529 112,588 56,294 28,147 84,442 42,221 126,664 63,332 31,666

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