215,045

5 × 41 × 1049

Starting at 215,045, the Collatz iteration reaches 1 after 98 steps. The first transition is 645136; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 5 × 41 × 1049

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 264,600

Proper Divisor Sum 49,555

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #214993 ← → #215051

Radix Representation

Decimal	215045
Binary	110100100000000101 (18 bits)
Octal	0o644005
Hexadecimal	0x34805

Divisor Catalog (8)

1 5 41 205 1,049 5,245 43,009 215,045

Collatz Trajectory (98 steps to reach 1)

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

215,045 645,136 322,568 161,284 80,642 40,321 120,964 60,482 30,241 90,724 45,362 22,681 68,044 34,022 17,011 51,034 25,517 76,552 38,276 19,138 9,569 28,708 14,354 7,177 21,532 10,766 5,383 16,150 8,075 24,226 12,113 36,340 18,170 9,085 27,256 13,628 6,814 3,407 10,222 5,111 15,334 7,667 23,002 11,501 34,504 17,252 8,626 4,313 12,940 6,470 3,235 9,706 4,853 14,560 7,280 3,640 1,820 910 455 1,366

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