3 × 7 × 17 × 359

Prime Factor Structure

Factorization String 3 × 7 × 17 × 359

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 207,360

Proper Divisor Sum 79,197

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #128159 ← → #128173

1 3 7 17 21 51 119 357 359 1,077 2,513 6,103 7,539 18,309 42,721 128,163

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

128,163 384,490 192,245 576,736 288,368 144,184 72,092 36,046 18,023 54,070 27,035 81,106 40,553 121,660 60,830 30,415 91,246 45,623 136,870 68,435 205,306 102,653 307,960 153,980 76,990 38,495 115,486 57,743 173,230 86,615 259,846 129,923 389,770 194,885 584,656 292,328 146,164 73,082 36,541 109,624 54,812 27,406 13,703 41,110 20,555 61,666 30,833 92,500 46,250 23,125 69,376 34,688 17,344 8,672 4,336 2,168 1,084 542 271 814

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