421,509

3 × 11 × 53 × 241

Prime Factor Structure

Factorization String 3 × 11 × 53 × 241

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 627,264

Proper Divisor Sum 205,755

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #421501 ← → #421517

1 3 11 33 53 159 241 583 723 1,749 2,651 7,953 12,773 38,319 140,503 421,509

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

421,509 1,264,528 632,264 316,132 158,066 79,033 237,100 118,550 59,275 177,826 88,913 266,740 133,370 66,685 200,056 100,028 50,014 25,007 75,022 37,511 112,534 56,267 168,802 84,401 253,204 126,602 63,301 189,904 94,952 47,476 23,738 11,869 35,608 17,804 8,902 4,451 13,354 6,677 20,032 10,016 5,008 2,504 1,252 626 313 940 470 235 706 353 1,060 530 265 796 398 199 598 299 898 449

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