3 × 7 × 131 × 229

Prime Factor Structure

Factorization String 3 × 7 × 131 × 229

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 971,520

Proper Divisor Sum 341,541

Digit Sum / Digital Root 42 (Root: 6)

Adjacent Primes #629977 ← → #629987

1 3 7 21 131 229 393 687 917 1,603 2,751 4,809 29,999 89,997 209,993 629,979

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

629,979 1,889,938 944,969 2,834,908 1,417,454 708,727 2,126,182 1,063,091 3,189,274 1,594,637 4,783,912 2,391,956 1,195,978 597,989 1,793,968 896,984 448,492 224,246 112,123 336,370 168,185 504,556 252,278 126,139 378,418 189,209 567,628 283,814 141,907 425,722 212,861 638,584 319,292 159,646 79,823 239,470 119,735 359,206 179,603 538,810 269,405 808,216 404,108 202,054 101,027 303,082 151,541 454,624 227,312 113,656 56,828 28,414 14,207 42,622 21,311 63,934 31,967 95,902 47,951 143,854

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