2,170,018

2 × 277 × 3917

Starting at 2,170,018, the Collatz iteration reaches 1 after 65 steps. The first transition is 1085009; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 277 × 3917

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 3,267,612

Proper Divisor Sum 1,097,594

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #2169997 ← → #2170039

Radix Representation

Decimal	2170018
Binary	1000010001110010100010 (22 bits)
Octal	0o10216242
Hexadecimal	0x211CA2

Divisor Catalog (8)

1 2 277 554 3,917 7,834 1,085,009 2,170,018

Collatz Trajectory (65 steps to reach 1)

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

2,170,018 1,085,009 3,255,028 1,627,514 813,757 2,441,272 1,220,636 610,318 305,159 915,478 457,739 1,373,218 686,609 2,059,828 1,029,914 514,957 1,544,872 772,436 386,218 193,109 579,328 289,664 144,832 72,416 36,208 18,104 9,052 4,526 2,263 6,790 3,395 10,186 5,093 15,280 7,640 3,820 1,910 955 2,866 1,433 4,300 2,150 1,075 3,226 1,613 4,840 2,420 1,210 605 1,816 908 454 227 682 341 1,024 512 256 128 64

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