2,520,255

3 × 5 × 19 × 37 × 239

Starting at 2,520,255, the Collatz iteration reaches 1 after 174 steps. The first transition is 7560766; the starting value is odd with 32 positive divisors.

Prime Factor Structure

Factorization String 3 × 5 × 19 × 37 × 239

Distinct Prime Factors 5

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 4,377,600

Proper Divisor Sum 1,857,345

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #2520251 ← → #2520257

Radix Representation

Decimal	2520255
Binary	1001100111010010111111 (22 bits)
Octal	0o11472277
Hexadecimal	0x2674BF

Divisor Catalog (32)

1 3 5 15 19 37 57 95 111 185 239 285 555 703 717 1,195 2,109 3,515 3,585 4,541 8,843 10,545 13,623 22,705 26,529 44,215 68,115 132,645 168,017 504,051 840,085 2,520,255

Collatz Trajectory (174 steps to reach 1)

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

2,520,255 7,560,766 3,780,383 11,341,150 5,670,575 17,011,726 8,505,863 25,517,590 12,758,795 38,276,386 19,138,193 57,414,580 28,707,290 14,353,645 43,060,936 21,530,468 10,765,234 5,382,617 16,147,852 8,073,926 4,036,963 12,110,890 6,055,445 18,166,336 9,083,168 4,541,584 2,270,792 1,135,396 567,698 283,849 851,548 425,774 212,887 638,662 319,331 957,994 478,997 1,436,992 718,496 359,248 179,624 89,812 44,906 22,453 67,360 33,680 16,840 8,420 4,210 2,105 6,316 3,158 1,579 4,738 2,369 7,108 3,554 1,777 5,332 2,666

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