5 × 7² × 523

Prime Factor Structure

Factorization String 5 × 7^2 × 523

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 179,208

Proper Divisor Sum 51,073

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #128119 ← → #128147

1 5 7 35 49 245 523 2,615 3,661 18,305 25,627 128,135

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

128,135 384,406 192,203 576,610 288,305 864,916 432,458 216,229 648,688 324,344 162,172 81,086 40,543 121,630 60,815 182,446 91,223 273,670 136,835 410,506 205,253 615,760 307,880 153,940 76,970 38,485 115,456 57,728 28,864 14,432 7,216 3,608 1,804 902 451 1,354 677 2,032 1,016 508 254 127 382 191 574 287 862 431 1,294 647 1,942 971 2,914 1,457 4,372 2,186 1,093 3,280 1,640 820

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