421,815

3 × 5 × 61 × 461

Prime Factor Structure

Factorization String 3 × 5 × 61 × 461

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 687,456

Proper Divisor Sum 265,641

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #421807 ← → #421831

1 3 5 15 61 183 305 461 915 1,383 2,305 6,915 28,121 84,363 140,605 421,815

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

421,815 1,265,446 632,723 1,898,170 949,085 2,847,256 1,423,628 711,814 355,907 1,067,722 533,861 1,601,584 800,792 400,396 200,198 100,099 300,298 150,149 450,448 225,224 112,612 56,306 28,153 84,460 42,230 21,115 63,346 31,673 95,020 47,510 23,755 71,266 35,633 106,900 53,450 26,725 80,176 40,088 20,044 10,022 5,011 15,034 7,517 22,552 11,276 5,638 2,819 8,458 4,229 12,688 6,344 3,172 1,586 793 2,380 1,190 595 1,786 893 2,680

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